Following the 9/11 attacks the world joined in expressing shock, revulsion, shared condolences and mourning for the families and support for the US against the egregious terrorist act against our shared values and freedoms. 
Following the London attacks, Trump piles on his own politically-motivated attack, adding insensitive classless insult to the injured & grieving families and making it clear that Trump's US does NOT stand with other countries against terrorist threats to our values. Thereby once again revealing himself as a selfish, classless fool & colossal embarrassment to the US. 
But everyone knows this by now and is counting down the days to when he is finally impeached; if not for high crimes, then for incompetency.