The Russian military dropped a massive bomb on the Mariupol Drama Theater, where locals were sheltering

Update.
Approximately 600 people died in an air strike on the Drama Theater in Mariupol — an AP investigation.
Eyewitnesses estimate that there were about 1,000 people inside the Drama Theater at the time of the airstrike — rescuers did not see that more than 200 people managed to escape.

The press center of the Mariupol City Council reported that about 300 people died as a result of the bombing of the Drama Theater building by a Russian warplane on March 16.

This is evidenced by the words of eyewitnesses who managed to survive the terrorist attack.

The Russian fighter pilot who targeted the theater wasn’t deterred by the huge signs saying CHILDREN (ru. ДЕТИ) written on the pavement outside the building, nor was he stopped by statements confirming that only peaceful and unarmed women, children, and the elderly were sheltering in the theater.