You bring up a great point. Right-wing groups are highly proactive about using every lever at their disposal to advance their agenda, including infiltration of government agencies. I don't think it has to be strictly right-wing groups, though. Scientology, whose political leanings I'm unfamiliar with, infiltrated a variety of government agencies, and as far as I know only paid a one-time price (short prison terms for leadership) for long-term gains in unchecked reach and influence.
All of which brings to question what moderates and left-wing groups are doing in order to secure their own future in this country.
As an alternative to committing crimes, I found South Korea's protest model fascinating: https://en.wikipedia.org/wiki/Park_Geun-hye#Choi_Soon-sil_sc...
1 million people sat in the government square for two whole months in winter in order to force the president of South Korea to not just resign, but forcibly impeached. When was the last time we in the U.S. did that? MLK's million man march comes to mind, but I think that was only one day. Going back further rings no bells for me.
I don't think you have to rely on the police to be sympathetic to your cause to get what you want. You do need to exert material losses on certain levers of power. Cause enough pain to certain keys, and they will unlock the safe for you, doesn't matter what they believe in. Right-wing groups bomb and shoot people, because their numbers are low and they need disproportionate acts to get the respect they want. South Korea shuts down the country, because consistently doing one act is easy when many people are on the same page and want the same thing.
The great thing about powerful people is there's so many different ways to hurt them. It sounds sociopathic because it is. Waving a sign for one day used to work because for most of our history we had leaders who genuinely wanted to work for us, they just didn't know where it fell in terms of priorities. For those who crave power and nothing else, us waving a sign does absolutely nothing.