I know it's a cliché, but today 2 people slept on the tram, shitting under themselves. That car was empty because of the smell. They were literally sitting in feces, a puddle under them. I don't know what to do in such a situation, where to report this. Anyone, even a small child, could sit on that seat, it's horrible to even think about it. Since then I've only been traveling standing up, or I prefer to go by bike. I didn't take a photo, but I think this is an almost everyday problem.
