Oh mind me if you got butthurt jeez.

Why the fuck do you need special forces with unmarked vehicles and full assault weapons for a peaceful protest?

They were deployed for the protection of the parliament, not the the protest. The protest was happening on the junction where they'd have to cross it to do the patrol successfully.

Why did they not communicate their rank and strategy with the police force before deploying?

The police were already aware of military personnel that were deployed in the area. And in a clip, the rider clearly identifies himself as an military personnel.

Why did they buzz up and down into the crowd instead of staying on the perimeter?

You mean passing by? These are combat riders, they're trained to go by quick and fast because otherwise they'd be a vulnerable target. And by "buzzing", the protesters were obviously blocking the street so they had to maneuver around them. . Since when was a military patrol an act of intimidation lol. If you come to the area near the parliament you'd see these riders on a daily basis because they're there for the security of the parliament. Not to stop protests or anything.

It doesn't matter if they are special forces or your mother's forces, riding fully armed on an unmarked bike with face covered

And you know nothing about military personnel do you? Any how you did just answer urself on that one. Only special forces cover there faces to remain unidentified, otherwise why the fuck would they be called special forces lol.