Which of your other constitutional rights can be lost?
Can you imagine the outcry if the government passed a law saying that you lose your right to practice your religion if you are convicted of misdemeanor domestic violence, on the grounds that some religions teach that women should submit to men? Or for that matter, your freedom of speech, right to vote etc.
Lousenberg never did anything good in his life.
Nobody who isn’t actively incarcerated should be prevented from owning a firearm regardless of what they were convicted of. If they can’t be trusted to live a law-abiding life then either incarcerate or kill them.