Your enthusiasm is good, and I wouldn't want to help diminish that.
If you can find a way to not repel the people you hope to influence, that would be best.
However, aggressive intimidation sounds like bullying to me.
The synonyms for Harass don't sound like anything anyone would want to deal with either.
If you can aggressively pursue with a non-repelling action, then maybe you can make a significant difference.
If you choose ugly behavior, you might achieve the opposite of what you are shooting for.
Also keep in mind, forceful individuals are often used as excuses to institutionalize diminished rights and such.
..just my 2 (or three) cents.
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