All of this.
You want to get arrested in the name of your cause, by all means. It falls clearly into civil disobedience and is a well known form of protest.
You want to restrict movement of another group of people, counter protestors or bystanders, you're now impending on THEIR rights.
You fight back against people defending their rights or they fight you for theirs, that's in the game.
Either or boths sides gets injured or arrested for those actions, it's in the game.
You signed up for this, and if you aren't prepared to suffer the consequences of your actions don't play the game.
Because it isn't a game at all and there are repercussions to your actions.
As there should be.
In my youth I was a part of Anti-Racist Actions which ultimately morphed into Antifa. (It's a long complex morph but that's the short version)
As a group we actively went out and faced down with physical aggression groups of neo-nazis who were staking claim to specific areas, most notably the up and coming Deep Ellum at the time.
I put my hands on people and they put their hands on me. Had the police caught the activity I would have gone to jail and likely been charged.
I made the choice to face down folks that were staking claim to a give "space" and issuing their rhetoric and propaganda. They were also issues they crested of violence regarding "unwanted" folks in that space.
I was 15. I knew my life, health and freedom were all at stake.
I made choices. I don't regret them.
I never went to police before or after, that was my choice.
It's not a game, and the rules are known.