Bambuser appears to come highly recommended online by various anti-police brutality sub-Reddits and websites. I was in prison until recently, so I have never used it, but it sounds great. Advertised as a way for people to record the police using streaming video so that if your phone gets seized the truth will not be.
Bambuser is based in Stockhome, Sweden. Cop Blaster does not yet support that area, so I listed them as being in possibly the closest place to Stockholm that Cop Blaster currently supports. That is American Samoa, but even in American Samoa you can use Bambuser.
Learn more about recording the police in public by watching the video below.