If there is a cause then there is an oranization for it. Support Metahuman Rights, join Mothers of Metahumans, hate metahumans, join Humanis polis. Want to try and conserve the environment and plant trees, join Greenspace. Want to conserve the environment with bombs, join Greenpeace.
There are plenty of legitimate and real outreach groups that offer support or promote a cause. But for every one of those there is one that has less problems paying off a gang to intimidate a key player.
Then there are terrorist groups. Different form your run of the mill gangs in that they usually have a goal beyond just survival in the spawl. Their aims tend to be higher, ie destroy the grip of Mega-Corporations, overthrowing a government, or crashing the matrix. (remember crash 1.0) These groups can be deeply dangerous controlling whole states like Hezbollah. To laughably ineffectual like the Commissariat of Communist Kommandos.