Not anarchists. Pro-DNC fascists.
They don't want to abolish government, they want to make sure you can't govern without them. They aren't against government, they want to make it impossible for anyone except their puppet-masters to function politically.
They call themselves "anarchists" because it has a catchier ring to it than "DNC thug" and "brownshirt nazis". But "anarchist" is precisely what they are not.
The previous convention saw this same thing. Repubs had to brave a gauntlet of screamers and spitters; the DNC had its "anarchists" safely down the street.