hand holding megaphone with sound illustration chalkboard background |
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| navigate by keyword : megaphone hand sound communication announcement chalkboard black white drawing waves concept speech message loud voice advertise activism protest marketing attention information broadcasting illustration public notify speaking volume amplifier demonstration presentation influence alert campaign instructions conveying promulgation propaganda hold sleeve noise alertness advocacy command transmit dissemination expression education rally call action generated |
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| A hand in a white sleeve holding a megaphone against a black chalkboard with drawn sound waves. AI generated |
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