Because those people are ignorant and foolish.
the people who go after law abiding Citizen's guns actually hate law abiding citizens and support violent criminals.
This is something that I have noticed when I sepak to my fellow members of the Democratic Party.
Many members of the Democratic Party will tell me privately that they hate law abiding people, and in particular people who live in "Red" (Republican) rural states.
Banning guns is a way for the radical left to attack law abiding people who generally tend to be Politically Conservative.
Unfortunately, contrary to what some of the other responders said, most of the illegal guns on the street do not come from legal sources.
Most of the illegal guns on the street were smuggled into The United States of America in shipping containers.
Ony 2 or 3% of the containers are inspected.
The presence of illegal guns in a shipment of machine parts cannot be detected by drug sniffing dogs.
The potential profits are enormous.
The gun of choice on the streets is the fully automatic AK47 assault rifle.
Fully automatic assault rifles have been banned for over 70 years, yet our street criminals are awash in fully automatic AK47s.
Those fully automatic AK 47s are smuggled in shipping Containers generally from China or Russia.
A container load of Fully Automatic AK47 Assault rifles has a cost of approximately $100,000 when purchased on the world market.
That container load of Fully Automatic AK47 Assault Rifles has a street value of over $5,000,000.
That is a profit of over 5,000 percent!!!!!
That is a huge profit and the gun smuggler is much less likely to be caught than a drug smuggler.
That is where the Fully Automatic AK47s that are on the street come from.
They do not come from licensed firearm dealers.
They come from the same people who are smuggling drugs into this country.