President Donald Trump’s attempt to deport pro-Palestinian activist Mahmoud Khalil marks one of Trump’s most egregious assaults on democratic liberties since taking office. Yet too many Democrats, particularly in party leadership, are responding to Trump in the most mealymouthed way possible. But this is a problem of Democrats’ own making: Their trepidation stems from their own history of repressing speech critical of Israel — and now we’re all at risk of paying the price for it.