I definitely don't endorse Black Friday, but I think this mindset uses the wrong sorts of tools to answer what might not even be the right question.
You can't fix the "we should go shopping on Friday after Thanksgiving" mindset with a law, or at least not with a law that's even vaugly in line with laws existing where I live. Even if you banned sales the day after Thanksgiving, that's not the issue, the bugger problem is the relationship between people, community, goods and brands.