And occupying the Senate building for the SCOTUS confirmation, admittedly to intimidate senators to change their vote, is different how? Other than one was met with resistance and the other was given unfettered access.
One was given access then 300 people were arrested for their civil disobedience (loud chanting, refusal to leave). Fox reported it as "[there to] protest Brett Kavanaugh’s nomination to the Supreme Court and put pressure on the handful of undecided senators". I've seen no indication people carried weapons, pushed through barricades, or threatened anyone.
Probably all of the violence, vandalism, looting, and coming in with tools to take hostages. And bombs with timers placed elsewhere.