hand-drawn of a megaphone amplifying a message

megaphone message illustration blackandwhite drawing loudspeaker communication handdrawn sketch shout speak announcement noise vintage graphic art concept sound voice retro lineart amplifier protest hand propaganda warning activism speaker graphicdesign expression power attention megaphoneart engraving linework monochrome illustrationart noiseamplifier announcementart artwork political activismart shouting expressiveart messageamplifier vintageart