Here's a few important things from a semi 1.May veteran from germany.
DONT GET THE POLICE AGAINST YOU!
They got the good stuff, use them to your advantage, dont escalate things so big, the police doesn't know which side is "the bad one".
If a brawl starts, make sure you are on the police side when it starts, let officers walk in between you. As soon as you see a brawl and police is closing in, play the victim not the hero. Make sure the police is against THEM not YOU!
"Tag" the opposition with paintballs and such. Not to mark them as targets, but to make them feel as one (they will retreat once they think "they're next").
If you got appropriate clothing use irritating agents (CS-Gas is very obvious, theres itching powder which is really fucking nasty if you inhale it or get it in your eyes. Have a pack in your pocket, rip it open and just smear it in their face, then drop the packaging. It will take a few seconds but it keeps them out for the rest of the day.)
If you are going with a group of friends / likeminded, choose one who stays back as "support", he's have to got: Olive oil, Water, some candybars, paper wipes,rubbing alcohol and some basic medkit. He's allways at a set location NOT MOVING AROUND, if he has to move, update everyone on where he is ! Hes the guy to clear you of CS gas. First use the Oil to rub clear off the CS residue, then wipe with rubbing alcohol and lastly use the water. Once you are cleared, wait atleast 5 min before you go back, to make sure you dont get an allergic reaction.
Those guys in the very front, ALLWAYS try to demask them, at best they retreat back, at worst you gain 2-3 sec because they will pull their mask back up again. Also, what many antifa dont get, if they wear a scarf you can just easily pull them down on that. Grab it, take a step back and then pull towards you, they will stumble and maybe fall, if they are retarded they will choke a little.
If you see some douche with a stick just bashing over the top of his faggy "comrades", GRAB THAT STICK AND TAKE IT FROM THEM! They don't have a strong grip if they overhand it, grab it, pull it towards you.(providing you wear gear to not get injured by it).
If you REAALLLY want your "shield wall" get the biggest and widest star sprankled banner you can find and do as pic related. This will keep people from Sprinting ahead and ultimately keep your formation in check. (It won't survive first contact but in addition, if they tear down your beloved flag you might get some nice Photo's for PsyOp.