I hate to inform you, but if we're going to do anything about the fash, we're going to "give them" lots of "excuses" to do violence.
*Any* form of resistance will serve as a justification for their violence, so unless you're planning on offering no resistance, you probably don't need to worry about "not giving them an excuse" to escalate their violent activities.
Resistance does *not* cause authoritarian violence. Authoritarians do.