Let's see. You carry a sign, you take it home to put in the trash. You eat a boxed lunch, you put the box in the trash can. If it doesn't fit, put the box in your backpack and take it home to throw away. If you drink out of plastic containers, throw them away or, once again, put them in your backpack and take them home. Yes We Can...clean up after ourselves!
Leftists need someone to change their diapers, let alone clean up after themselves.