Why not campaign against these ungracious acts instead?

Not flushing toilets after use

Squeezing into crowded passenger lifts with shopping carts when there are cargo lifts nearby

Spitting

Beating the seat in the bus to cool it right after someone gets up

Not giving up seats to the elderly, the handicapped or pregnant women on buses and MRT trains

Not turning off mobile phones in theatres

Cutting queues at taxi stands

Occupying more than one seat with shopping bags and handbags at food centres

Rushing into lifts and MRT trains before others step out