First and for most you talked about the trolley problem...

´ like enforced preventive isolation of this elements in special shelters (you can see a lot of webbing about them now btw), unused places in refugees camps, hotels which stay empty during the lockdown, etc?´ Thank you, This is more constructive thinking.

I totally agree with you on this there should be more humanitarian solution but that cost money, effort, and employees/volunteers atm they are sparse. Not saying its impossible but it will take time and resources. If we couldn't solve the problem before why would we able do it now? I´ve put together small care packages with tissues, handsanitizers and some spare coins that's been given away to some homeless people. My resources are limited but its the smallest thing anyone can do.

´But like yeah if one particular group is taken others down, the action should be taken. For this particular reason we arrest murders and rapists, for example` not even going to comment on this....

´avoid it as long as all commuters wear masks and keep distance´ Well that could be fix by enforcing stricter protocol like (no mask no ride) and also to provide with mask and handsanitizer at stations. Ive seen homeless people do more effort with packaging tape to cover their faces than some other people..

I haven´t used the U-Bahn in a long time so i don't know how big of an issue it really is, but i think its a bleak one compared to the thousands of coronavirus sceptics that flooded the city last year.

When it comes to other options of commuting there's (Bike) or walking or a mix of all of these to ease the pressure on the U-Bahn.