Do the things that are viewed as acceptable to such a degree that the regime is forced to respond with force. Then do the violence in self defence, have a team prepared for it in advance as well. The Chilean Primera Línea method.
It's the only way that escalations will be accepted by liberals. The blame needs to be plainly and clearly on the state for the escalation, that's just how it needs to be.
I really think we have to adapt to this, accept that we're not going to be able to change the conditions so that people accept direct action or violence and instead adapt to the conditions. If we want the violence then we need to force the opposing side to react in a way that makes our response acceptable to liberals. Then we will get significantly more popular support.