People don’t realize that fireworks are essentially explosive rockets. Like mortar. If you’re going to enjoy a fireworks show, make sure you are far away, and the people launches the fireworks know what they are doing. Otherwise things like this happen.
In Prague, a crowd of people are enjoy a fireworks show. One rocket lands in the middle of a crowd smoldering. No body runs or seems to care, and only three seconds later do they figure out to run – after the huge explosion!