At least two visible with performance "safety" props. Just need one squad fully armed to persuade them to disperse, one fireteam emplaced in front of their target of intimidation, other fireteam to hold a flanking position in skirmish positions behind cover but visible to ensure implicit awareness of being encircled and under-armed.
No need for provocative actions as such a counter-demonstration communicates clearly and calmly such actions won't be tolerated in these communities