Newspaper headlines: 'Kids' strike' planned and Corbyn woes
As the Labour anti-Semitism row refuses to abate, the Times reports that Jeremy Corbyn faces potential frontbench resignations in the weeks ahead as well as stark warnings or even abandonment by party donors.
It adds up to "the most dangerous period of his leadership, days before crucial local elections", the paper says.
One donor, Sir Ronald Cohen, is quoted as saying: "If the leadership does not stamp out racism now, racism will stamp out the Labour party."
Writing in the New Day, Julie Burchill describes Labour as "a rotting edifice fatally riddled with the ancient disease of anti-Semitism".
But the Guardian's Matthew d'Ancona argues that "antisemitism has long lurked across the political spectrum, as likely to arise and metastasise on the right as on the left".
Recalling how the Conservatives' then-leader Iain Duncan Smith "acted ruthlessly" over claims of anti-Semitism in a section of the party back in 2001, the columnist suggests Mr Corbyn's actions in similar circumstances now will answer the question of "whether he is really a leader".
'Shot across the bows'
The Daily Telegraph suggests Mr Corbyn's refusal to denounce groups like Hamas and Hezbollah, which are considered terrorists by the EU and US, actually threatens to further destabilise his leadership.
The i front page emphasises comments by Corbyn ally Diane Abbott, who said the row may be being exploited as part of a plot to trigger a leadership contest - but argued that this would simply result in Mr Corbyn's re-election.
The intervention of Unite boss Len McCluskey which saw him accuse some Labour MPs of being "nothing short of treacherous", will, says the Guardian, "be seen as a shot across the bows of some of Corbyn's harshest critics to ensure there is not a leadership challenge" after the local elections.
But the paper highlights polling analysis that suggests the party could lose 175 council seats in its worst local election results for 35 years.
English fizz with a little je ne sais quoi - a race is on between French champagne houses to produce bubbly on this side of the Channel, according to the Times
Welsh wines are the toast of Bordeaux - the Daily Telegraph reports on the wineries enjoying a surprise boom in demand from France
Ethical hipsters are driving return of electric milk floats - the Times reports on continuing demand for deliveries of foil-topped milk bottles on the streets of east London
Starbucks sued for $5m over too much ice in drinks - a US woman alleges false advertising due to the space in cups taken up by ice, the i reports
To those who wait
Restaurants could be stopped from adding a discretionary service charge to bills, and from taking a cut of tips meant for waiting staff, under new government proposals that are widely covered in the papers.
The word "discretionary" in front of "service charge" was always a bit redundant, suggests the Times, adding: "British etiquette dictates that one should never strike a tip from a bill, no matter how awful the meal or rude the waiter."
But, says the Telegraph, "there was outrage last year when some of the country's best known restaurant chains... were accused of keeping all or part of the service charges automatically added to bills rather than passing them on to staff".
The paper says the government is also concerned about inadvertent "double tipping" on cards or in cash left on tables, due to it not being made clear a service charge was already included in the bill.
The Times quotes Business Secretary Sajid Javid: "All discretionary payments for service should be voluntary to the consumer, received in full by workers and transparent to the consumer who makes them."
On the eve of a nationwide walkout that promises to be unlike any before it, a number of papers consider the issues behind the first ever "kids' strike".
Thousands of children are expected to be kept out of school in England on Tuesday, by parents protesting against new tests for year two pupils.
"Angry parents have told how SATs tests are leaving their children stressed, in tears and unable to sleep as they fear being branded failures at the tender age of six," reports the Daily Mirror.
The New Day says "many parents, teachers and education specialists believe that the standard set in the test is 'developmentally inappropriate'".
"Children are expected to understand the past and present tense, the correct use of a comma, question mark, apostrophe and full stop, and recognise adjectives, adverbs, nouns and verbs."
Opposing arguments are presented in the paper, with a retired head teacher saying the tests are "an educational health check" which "for short-term pain... provide long-term gain", but a mother and governor arguing that "the pressure on teachers to teach to the test seriously impacts other essential aspects of the curriculum".
Writing in the Mirror, general secretary Russell Hobby says the National Association of Head Teachers shares parents' "frustration that the tests have become little more than a box-ticking exercise for bureaucrats".
The Department for Education says the tests are part of its determined effort to raise standards and "help every child fulfil their potential regardless of their circumstances".
But the New Day says Education Secretary Nicky Morgan's claim the protest is "being led by some of those who do not think we should set high expectations" has "infuriated organisers".
Comedian in chief
"Barack Ho-HoBama," is the headline in the Mirror, as a number of papers reflect on the US president's joke-filled speech at his final White House Correspondents' Dinner.
The paper says the president had "guests in stitches with a string of jokes about his final months as US president".
Prince George featured in one of the best jokes of the night, suggests the Times, in which Mr Obama had expressed regret at the declining respect he felt there was for him at home and abroad.
"Last week, Prince George showed up to our meeting in his bathrobe," the president said. "That was a slap in the face. A clear breach of protocol."
In another joke, highlighted by the Guardian, the president remarked: "In my final year, my approval ratings keep going up.
"The last time I was this high, I was trying to decide on my major," he said, before finally signing off: "I just have two more words to say: Obama out."