He riled his supporters up for weeks with mendacious attacks on the election and our democracy. He promoted the gathering in DC for weeks, and said they would be “wild.” He instigated the attack by telling people to march on the Capitol. .
He reveled in the attack for hours. He praised the rioters and said he loved them. He continued to lie about the election.
And only after his White House counsel and others emphasized to him his potential criminal liability, and only after calls for his removal reached a fever pitch, did he pretend to condemn the violence that he had fomented and praised.