I've watched the video quite carefully.
Tara (who you need to remember had tweeted "when/where is this happening? I wanna fuk up some terfs" earlier that day) first tries to knock the camera out of Maria's hand, but it appears to be on a strap of some sort and doesn't fall.
Another person (Tara's girlfriend?) then lunges and actually takes the camera. There is a scuffle involving the two of them and several other people. Maria grabs the other person by the back of their coat, and they throw the camera to the floor. You can hear the crack as it hits and bounces. Maria grabs the person who threw her camera and holds them around the waist, from behind. The person who has just committed theft and criminal damage and destroyed her property. The person struggles, and kicks backwards at Maria. Maria kicks back. It's at this point that Tara and one other person rush in and start punching.
Luckily for Maria she went down quite quickly so was shaken but not badly hurt.
Tara was subsequently convicted of assault, quite rightly. I would imagine that during the investigation of said assault many statements and videos were examined pretty carefully by the police and the CPS. Maria wasn't charged with anything.
Before her court appearance Tara also threatened a female trade union worker who was on her own picket line, for attending a WPUK meeting. Tara is not a member of the union involved, nor does she work for the organisation they were picketing. There was no reason at all for her to be there.
Tara Wood is a violent thug yet nobody apologises for her, or tries to rein her in. Instead we see weak attempts to disguise her violence by saying she was "provoked". Nope. Not buying that.
But with people like here being seen as the face of transactivism are you really surprised that there are so many scare stories about the trans bogeywomen starting to spread and being believed? I don't, in general, have a major issue with the toilet/changing room thing (I haven't actually been in a public changing room for about 20 years, there I go womaning wrong again....) but I wouldn't want to share any space where I was in the least bit vulnerable with Tara.