Civics

I feel that there is a civic duty to be courteous on the CTA. I hate it when people take up an unnecessary amount of space, or stand right in outside of the doorway obstructing those passengers trying to get off. How much common sense does it take? Half of my life is basically me on the CTA so I often see such stupid things. I mean, the CTA is a public service, a communal thing. Everyone needs to work together in order for it to run efficiently.