Sen. Bernie Sanders likely had a bad feeling when the thousands of mostly white supporters who had turned out to hear him speak in Seattle on Social Security watch a #BlackLivesMatter activist take over the microphone and declare the entire audience guilty of “white supremacist liberalism.”

The previous time the #BlackLivesMatter crowd had managed to sabotage a Sanders event, it was followed the #BernieSoBlack hashtag. As one tweeter explained, “#BernieSoBlack is what happens when white liberals try to tell black people what to think.”

Why has Sanders been singled out for this sort of attention? We’re not sure, but Lee Fang of The Intercept says the two women who took over Sanders’ microphone in Seattle issued a really long press release urging the public to use the #BowDownBernie hashtag.

The problem with Sanders’, and with white Seattle progressives in general, is that they are utterly and totally useless (when not outright harmful) in terms of the fight for Black lives. While we are drowning in their liberal rhetoric, we have yet to see them support Black grassroots movements or take on any measure of risk and responsibility for ending the tyranny of white supremacy in our country and in our city. This willful passivity while claiming solidarity with the ‪#‎BlackLivesMatter‬ movement in an effort to be relevant is over. White progressive Seattle and Bernie Sanders cannot call themselves liberals while they participate in the racist system that claims Black lives. Bernie Sanders will not continue to call himself a man of the people, while ignoring the plight of Black people.

Even ultra-liberal site Daily Kos retaliated with the #GrowUpBLM hashtag.

Time for Sanders to revisit the official list of “White People’s Roles and Responsibilities.”