That wasn't the question. Why would someone cramp that many people in the middle of nowwhere. Any cellar in a house is saver, even the subway.
If have no idea if even a single person died there, if so it looks more like a sacrifice like Normandy .......
No, that's exactly the question that needs to be asked instead of your straw man bullshit. Why bomb a theater? Why bomb civilian housing for two weeks so they become homeless and have to shelter in other buildings, such as a theater? What about people who don't have a "cellar", open season on them?
Subway in Mariupol, yeah right

I see four possible answers
-It was Azov that blew it up (seems to be Russian argument)
-It was used by UA side to attack from, so its a fair target for RU.
-It was a RU mistake
-RU side just decided to risk its plane and use a bomb on civilians instead of mil. targets (because Putin craves more innocent blood)
The scenarios can be debated by the keyboard warriors.
What concerns me is why 350.000 people are still not allowed to leave Mariupol!! Why people who seem to care so much about human casualties, are not outraged that 350.000 civilians are forced to stay in a besieged city with a humanitarian crisis? Is the concern for their safety still the official reason? But then how come
20,000 residents have left Mariupol in private cars so far? Why only letting few thousand go per day is fine but not all 350.000 in buses?
Shouldn't everyone concerned for innocent civilian lives be talking about this, and putting more pressure on Red Cross/UN to make sure people can evacuate so things like this won't happen again?