"Even if it was a lab accident, it's not a reason to be outraged with the Chinese government."
Oh, yes it is.
It would be 'manslaughter' on a mass scale.
The largest ever seen.
If this were due to their negligence, then millions of dead, 10's of millions out of work, Trillions in lost productivity is unavoidably consequential.
It would be the worst 'accident' in human history and the responsibility would be squarely on their shoulders.
If you're experimenting with bombs and you blow up all your neighbours homes by accident - that's manslaughter, a very serious crime.
The geopolitical fallout would be unimaginable.