Gun control doesn't work because gun control doesn't happen. You can't control guns - and therefore gun-related crimes, death etc. - if you are merely trying to block "consumption" - i.e. sales of guns - without first stopping the production of guns.
As long as the U.S., France, Germany, the UK, etc. are massive manufacturers of guns, there will be a gun trade whether legal or illegal and, therefore, the resulting potential for deaths from guns.
If you disagree, you are illogical and should not post.