The cause of these activists is correct imo , history has shown it's the strength of the activism that can produce resuls eg;..Nelson Mandela, British poll tax etc.
The severity of the consequences of having been a jw can also account for the degree of protest, does anyone know these individuals story ? It may be their protest has had a healing effect.
I always make a point of imparting some ttatt at the trolley/cart stance, some chat others are visibly agitated , I hope I leave them with something to think about.
Perhaps a stronger approach at these street /public places where jws are would be more pro active.
I cant however condemn the actions of the activists in the vidio and I don't give a rats arse about how the JWs view them!!!