Silence equals violence

The political left is many things ... among them is being a bumper-sticker-slogan activist movement.
Stupid people who love unprovoked violence while enslaving their fellow earthling know they can't persuade civilization to embrace hell-on-earth, so they rely on brain-dead slogans to get their pro-dystopian agenda adopted by corrupt leaders everywhere.
Sadly, since 30-40% of the human race has an IQ below plant life, their propaganda techniques work far more often than they should.