Do not have anything to do with the SWP! Apart from the fact they are political parasites who coopt other peoples protests and rebadge them as their own (which if what Sisters Uncut do) they have committed the most atrocious acts against women sexually abused and raped by party members.
Surely you have heard of Comrade Delta. If not, then google and read the complete depths to which male left "socialists" groups will stoop, and shit all over women.
As to whether the youtuber was antagonistic, he was quite confrontational but his purpose (as I understand it) is to point out how the police either fail or are random in applying the law.
How many police forces have accused women, eg KJK, of a hate crime because some TRA found a word insulting. Whether he actually found being called facist insulting based on existing practice the police should have acted.
ie the police pick and choose who they support and who they dont.
Look how quickly they got the crowd to disperse, once they knew women would be leaving the meeting, so it appeared they were "protecting" them. But in fact they enabled the disruption to the meeting the whole time the "rave" was going on.
His whole focus was to illustrate (nit pick) each time the police did not follow procedure.
And yes he got riled up when they accused him of being antagonistic for not "complying" with the TRAs trying to push him away with their posters.
Had their sympathises been the other way round they would have snatched the posters from the group. I have seen them do that when Black led protests have waved posters around.
Also, I do wonder if there is a culture divide here. How he spoke may well reflect where he is from. We aren't all the soft spoken two faced agitators who tried to engage him in "polite" conversation whilst egging on those behind.
I suspect long held contempt for english duplicity may well have contributed to his response.
So the story of TRAs against lesbians was to him almost immaterial. He was doing what he set out to do which is illustrate police hypocrasy.