Shall we go over what else is historically accurate?
If by "killing police" you are talking about the abritish soldiers during the Revolutionary War, this country wouldn't be free if it wasn't for that. This was done to get out from under a tyrannical ruler. So if you want to live under that kind of rule again, you know where to go, unless you are already there.
There was nothing in the Constitution as a law or anything for white people to own slaves. It was part of the culture of the time, even before the first settlers in America while they were still in England. Not trying to justify owning someone as a slave, just making it historically accurate that it was part of the culture.
I would like to see a source to see the laws that were made making homosexuality a crime. I know that discrimination has taken place for centuries, but I don't recall an laws in which made it illegal.
As far as marriage, once again it goes back to the culture. African-Americans were not allowed a state-legal marriage, although many did live together as husband and wife.
A hunting and fishing license was not always required in this country. The first licenses were around 1890s, which would have been after slavery ended.