I don't see how you can claim that the Paris Attacks are evidence that gun control doesn't work.
Yes, 130 people died, and several hundred were injured, by men with guns.
But that is the biggest mass-killing in France since WW2, and the biggest in Europe since a train bombing in 2004.
In regards to other shootings, consider that the list of
French "Rampage" killings (4 or more), counts 89 dead, since 1875, in only 11 incidents.
In regards to school shootings,
I could only find one, where 3 people were killed.
In regards to workplace shootings,
there are 2 in France, one in 1913 and one in 1992, killing seven each.
Meanwhile in America,
there have been 1,260 killed in mass shootings, and 3,600 injured, just between January 1st 2013, and October 1st 2015.These aren't terrorist attacks. They're not highly planned attacks by groups of gunmen. These are typically one person with a gun, without a significant plan, besides to shoot people.
And as far as Drugs go, they're very very different to guns.
Both drugs and guns are illegal in the UK, but I know who to ask to get drugs.
I wouldn't know where to begin to get guns.
Drugs are so highly smuggled despite being illegal, because they have a personal use.
People buy drugs to use on themselves, without the intent to harm others.
The only reason people buy illegal guns is in order to kill other people. Most people don't want to kill other people. Hence gun crime is low, even though guns are banned in the UK.
When people use guns in the US, for the most part, it's a crime of passion, or mental illness is possibly involved. These people are desperate, and they use what they have at hand.
For them, guns are at hand, so they use them.
In the UK, knives are at hand, so they use them.
But you can't kill 30 people in a school with a knife, so it's a much better situation than having guns so readily available.
If you restrict access to guns, then you prevent the common person from shooting up a school with their parents gun.
Criminals can still gain access to guns, yes. But criminals use guns in a completely different way. There is no benefit to shooting up a school, or a hospital, so why would your career criminals, or even your money-desperate robbers, do so?