Legal? Most occupy occupations were dismantled by the police, even in progressive cities like Oakland and Portland. Perhaps the police were wrong and the protestors had a right to occupy, but if so, why didn't the protestors on Jan 6 also have a right to occupy the Capitol?

Violent? The only violence on January 6th was between police and protestors. There was plenty of similar violence at Occupy protests, but the Occupy protests also had other kinds of violence, like Sexual Assaults Reported in 'Occupy' Camps[1]

Insurrectionist? "The FBI at this point believes the violence [on January 6th] was not centrally coordinated...there was no grand scheme...to storm the Capitol and take hostages."[2]

Sympathizers within the government? Like Obama?[3]

An attempt to disrupt the normal functioning of government? Yes, both were. That's actually a common protest tactic - protesters generally argue that a protest has to be disruptive to be effective.

1: https://abcnews.go.com/us/sexual-assaults-occupy-wall-street...

2: https://www.reuters.com/world/us/exclusive-fbi-finds-scant-e...

3: https://www.washingtonpost.com/opinions/obamas-risky-embrace...