Found in public transportation station metro Boston.
The only problem with this type of awareness raising activism is that the sticker isnt produced correctly as it was probably done very low budget.
It also does not show any kind of internet address to give people more information.
This is critical to continued educating of the public.
Whoever did this thanks for the activism and please improve your info. Also be aware that laws that aren't usually enforced are often utilized to discourage and punish activists and in MA TAGGING IS ILLEGAL. That can mean stickers by definition.
IF this is used against you, your lawyer should advise you that taking a 'malicious destruction' charge actually holds less time.