See if you can spot the difference between Bernie's statement and MLK's:

Let me say as I've always said, and I will always continue to say, that riots are socially destructive and self-defeating. ... But in the final analysis, a riot is the language of the unheard. And what is it that America has failed to hear? It has failed to hear that the plight of the Negro poor has worsened over the last few years. It has failed to hear that the promises of freedom and justice have not been met. And it has failed to hear that large segments of white society are more concerned about tranquility and the status quo than about justice, equality, and humanity. And so in a real sense our nation's summers of riots are caused by our nation's winters of delay. And as long as America postpones justice, we stand in the position of having these recurrences of violence and riots over and over again.

I don't think it's at all unreasonable to criticize Bernie for leaving that second part unsaid. Not to mention the point Hasan was making, which was picking this moment to talk about nonviolence - at a time when Trump is preemptively painting the protests as violent and insurrectionist - affirms Trump's framing and justifies police escalation.

I'm with Hasan here, this was tone-deaf of Bernie, if not completely hypocritical.

Bonus MLK quote:

These are the times for real choices and not false ones. We are at the moment when our lives must be placed on the line if our nation is to survive its own folly. Every man of humane convictions must decide on the protest that best suits his convictions, but we must all protest.