Question

prepare placards propagating the idea of bus boycott ​

Answer 1

Explanation:

Playcards are used to write phrases that give some meaningful information mostly regarding some topic or protest.

Some of the playcards could be;

Stop sitting in buses that can stop anywhere

Its better to walk than sitting in a dirty bus

If you need grey paint, take it from Bus exhaust

Stop going in buses with unfair fares

Stop using buses to stop promoting bus mafia