megaphone, loudspeaker, microphone, yell, bully pulpit, shouts, bellowing, nightstick, sieg heil, intercom, placard, soapbox, billy club, holler, stemwinder, tape recorder, hecklers, posterboard, lectern, clenched fist, shrieking, scream, cell phone, passersby, picket, wailing, pitchforks, sirens, boombox, pager, foghorns, tannoy, barks, pamphlets, growl, rallying cry, profanities, chanting, squawks, imprecations, protester, shush, slogans, battering ram, buenos dias, barricades, walkie, cuba libre, radios, tase, whisper, walker, picketer, marchers, lecturn, ramrods, claxon, taunt, pulpit, lynch, demonstrators, shovels, jackhammers, pepper spray, flashlights, honks, hiss, handcuffs, expletive, klaxon, plink, fire extinguisher, civil disobedience, sawhorse, kazoos, voices, earmuffs, mike, barker, coatless, fliers, teleprompter, bystanders, quacking, hoofbeats, marching, eyeshot, fists, cadence, bumper sticker, cane, bleeper, nooses, hectoring, catcall, sledgehammer, stun gun, guttural, clackers, cowbell, clucks, maced, vibrator, flashlight, wheelchair, binoculars, cleaner, crane, megaphones, phonograph, radio, telephones, toothbrush, typewriter, auto, beacon, billboard, blender, buzzer

loudspeaker system, speaker, speaker system, speaker unit

loud-hailer