You absolutely have a right to film in public places. So much so that several court doctrines revolve around the idea that in a public place you "have no expectation of privacy." This is part of the series of decisions that lets us film police.

https://sparkslawpractice.com/blog/what-to-know-before-recording-someone-without-their-consent/

If this is definitely not in the US, and everyone else commenting knows that and I missed it, then my apologies in advance.