I think you are letting 70 years of liberal propaganda get to you. Silencers were legal for about 20 years, and we had no problems with them. The only reason that we can find that was given for their inclusion in the 1934 federal firearms act was that Roosevelt administration officials were worried about them being used for poaching, but that no one had ever been caught poaching with one.
The effective ban on silencers because of the required $200 tax has been one of the worst government health policy disasters in history. Litterally millions of people have suffered hearing loss for lack of a $5 gun muffler.
I think the real reason for the ban was to insure that people could not conduct pistol practice in their back yard without annoying the neighbors. Silencers were treated as a social necessity for decades in europe. People were not allowed to obtain a pistol permit unless they showed that they were also obtaining a silencer, so that the neighbors would not be annoyed. Silencers were very common on hunting rifles in Britain up to a decade ago for this very reason.
In Finland today, anyone may own, purchase, make, or trade a silencer without a permit, and they don't have any problems because of this freedom. We should have the same freedom here.