Safe Counter-Protest Tactics?

Does anyone have ideas for safely dealing with counter-protestors when they actually disrupt the protesting? There's a highly organized group that will bring in large speakers and will literally take over the existing protest.

Also, when encountering Nazi/Proud Boy/White Nationalist demonstrations what are some *SAFE* but effective ways to encourage them to disperse?

I've only come up with things like air horns or cow bells to interrupt any chanting or just to be obnoxious but this doesn't help counter amplified noise; also taking from some Planned Parenthood tactics, using umbrellas to block them from public view.

Note: I do recognize that engaging is inherently risky.