I don't understand the idea of doing ANYTHING that advertises you or your family's presence inside the home to the person on the outside. I don't see what it accomplishes. If anything, it is likely to antagonize that person and to give him or her additional reason to keep banging on the door, now that he/she knows someone is home.
No...stay inside, get everyone in the safest place possible, and call 911. Any other action is foolish.
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