JWs used to target churches, stand outside and wait for services to dismiss, and protest with signs that read "Religion Is A Snare and A Racket".
I didn't see this man doing any that. He was just walking around quietly with a video camera. Incidentally, this occured during a lunch break, not during "church services".
Even if he was holding provocative signs and shouting, my initial thought is: what goes around comes around. WT did worse than this for years- they should be more tolerant when others take advantage of the civil rights and "religious freedoms" WT brags it has gained for everyone through the courts (in reality, we know those 'freedoms' were only for WT's advantage- they don't now, nor ever have, given a flying f**k about a non-JWs religious freedoms).
JWs used to be (and in some ways still are) the most in-your-face, invade-other-people's-privacy, 'take the fight to the people' religions that exists. It's astonishing how intolerant JWs are when others do anything similar to what they do.