Definition: Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].
Input: As YA best-sellers go , the Bernie Sanders Guide to Political Revolution is an unlikely contender . 
Sanders has described the Guide as an introduction to "what being a progressive is all about ." 
Sanders ' guidebook is not a children 's book , of course . 
Sanders ' popularity with young people took many journalists and career Washingtonians by surprise in 2015 and 2016 . 
The Bernie Sanders Guide is based on Sanders 's previous best-seller , Our Revolution , which was published one week after the election of Donald Trump . 
Sanders used Our Revolution to tout victories , air grudges , and revisit the campaign 's inflection points -LRB- debates , media interviews , rallies -RRB- and what it felt like to experience them in the moment . 
Sanders is cranky and impatient , and he makes a convincing case that the left could use more crankiness and impatience if it wants to start winning . 
On the page , Sanders 's case -- so electric on the campaign trail -- was larded down with repetitive statistics and digressions . 
The most refreshing thing about the Bernie Sanders Guide is the most refreshing thing about Bernie Sanders the politician : a seemingly total lack of condescension . 
Sanders does not strain to convince his young readers that criminal justice reform will be immediately relevant in their own lives . 
The trimmer , punchier Bernie Sanders Guide skips the leaden chronicle of diner conversations and C-SPAN coverage . 
Our Revolution spent almost 50 pages on Sanders ' childhood and his early political career .

How Did Bernie Sanders ' Latest Political Manifesto Become a YA Best-seller ? 