1. Warned the police, they were expecting drama.
^Explained to the police what their static protest was and how many banners they had.
2. Protested trans ideology at pride
Key word here is 'ideology' which asserts that humans can change sex, humans can be "born in the wrong body" etc, which is obviously false.
3. Took a megaphone to ensure they were the loudest voice.
The music from the parade is rather loud so a megaphone is essential to amplify a human voice.
4. Also shouted at a float that they were not welcome at pride.
^This was the MAP [paedophile] float if I recall correctly.
And yet when people shouted back at them, they are victims?
It was a bit more than just "shouting back at them" though, wasn't it? It was an intentional aggressive confrontation to intimidate.