Although this is bad, I have to admit that it's also rather funny. I do wonder what caused the squirrel to go on such a rampage. Perhaps it felt threatened? Maybe it was abused? Perhaps it got caught inside and out of fear did what animals do - bite and claw their way out. I'm assuming it was the latter reason and this just happened to be an odd situation. I don't think it meant to hurt anyone, I think it was just scared and people got bit because they got in its way. I can't imagine another reason than that. And the people were fine anyway.