David Duke has been banned from Twitter

The company’s policy forbids accounts that “promote violence against or directly attack or threaten other people” on the basis of personal characteristics. Duke, who was the leader of a KKK offshoot from 1974 to 1978, has been routinely condemned for racism, anti-Semitism, misogyny, and homophobia.

It was unclear what specific action warranted Duke’s suspension, but a Twitter spokesperson told CNN that the decision was “in line with our recently-updated guidance on harmful links.”

For some, however, the decision to ban Duke — who had more than 53,000 followers — was too little, too late. Legal advocacy organization Southern Poverty Law Center, which specializes in litigation against white supremacist groups, called Twitter’s actions as “a step in the right direction,” while also chastising the move as “long overdue.”