"As much as I detest hate speech, I would have more respect for the Mayor's senior advisor if he would stand by his FB post and have the courage of his convictions to leave it up," he wrote. "So I'll do that for him — and post that which I claim to have disdain for, in order to give people a window into the mindset of a key figure of Mayor de Blasio's policy team, because I believe that one who takes pride in hate and also makes mayoral policy is an incongruity as stark as the signs in his post."