What bothers me
is that in the US, one may use deadly force when one is in immediate danger of death or serious physical harm. There are other circumstances like preventing arson or felony theft, but these vary by state. In the Bladerunner case, he shot into a room with a closed door and no knowledge of who was behind it. It could have been a BG, but could have just as easily been a teenager doing something on a dare or a monkey or his wife. In any case he was not in immediate danger. His behavior was at best irresponsible and at worst criminal.
Whenever gun owners behave irresponsibly, it's to be expected that the anti's will demand more restrictions. The best way to preserve our rights is to behave responsibly.