Consider how law-abiding protest groups in other countries have uncovered and distanced themselves from Infiltrators and Provocateurs instigating violence:
In Belfast, Northern Ireland between 1980-1995 Irish Catholics were inundated with British provocateurs whose mission was to marginalize the efforts of lawful Citizens at protests. Provocateurs that joined with lawful groups appeared to be like everyone else, supporting the cause; and would attend meetings to spy on group members, then offer ideas to cause members to break the law; other provocateurs attending meetings would appear law-abiding sometimes offering constructive ideas; then suddenly one day without warning instigate violence at a protest, attacking the opposition at a protest with words, their signs or e.g., throwing rocks. Lawful protest groups to counter the unexpected violence caused by Provocateurs in their midst or those in opposition groups at a protest, came up with the following counter measures: Law-abiding Protest groups appointed “Stewards” that monitored not only their own members but demonstrators in opposition groups at protests: ACTION TAKEN: When it became apparent at a Protest, someone in their own group was instigating violence or causing confrontation with the opposition at a Protest, “Stewards” would blow a low pitch whistle; then immediately all group members not involved in violence or confrontation would quickly distance themselves many feet from the lawbreakers forming a tight circle, sometimes holding hands, to block out the “instigator” or “Provocateur” from returning or entering their law-abiding circled of Citizens. Meanwhile “Stewards” as a matter of operation always carry a video camera to tape for the record, that their law-abiding members immediately distanced themselves from an “instigator” that caused confrontation or violence. That videotape might be needed later to prove who was and who wasn’t involved in violence. A copy of that videotape might also be provided to the press to expose a provocateur or to marginalize political opposition that employed the provocateur.
Keep in mind, that a Provocateur in a group of law-abiding protesters might individually start a fight against a fellow group protester or with another protester also a Provocateur—from either side—to cause arrests; in which case the “steward” would blow the whistle for law-abiding group members to immediately separate, distancing themselves from all confrontational persons in the manner described above. Subsequently a protest group will have to sort out whether a violent instigator in their group, is a Provocateur.