Are they in gangs or drug dealers or why does this happen? Why Chicacago?
Tragic either way.

In the UK, guns are not available to anyone but those who can prove that they need it for sport, or people with cash and criminal contacts. So guns are not available to gangs - they use knives instead and there are a few gang related knife killings per year. But the police are on a massive hunt of these knives and confiscate all they come across.

And the idea of banning guns probably wouldn't work in the USA - there are too many guns around already, it would be impossible to collect and control them all:


http://www.gunpolicy.org/firearms/region/united-states:
Number of Privately Owned Firearms

The estimated total number of guns held by civilians in the United States is 270,000,0001
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Rate of Civilian Firearm Possession per 100 Population

The rate of private gun ownership in the United States is 88.82 firearms per 100 people



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Rate of Privately Owned Firearms per 100 Population - World Ranking

In a comparison of the rate of private gun ownership in 179 countries, the United States ranked at No. 1


Compare with Russia:
Although I think the figure must be wrong - the figure is much lower than Sweden and Finland. I thought shooting for game was a hobby in Russia....

Civilian Guns

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Number of Privately Owned Firearms

The estimated total number of guns held by civilians in Russia is 12,750,0001

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Rate of Civilian Firearm Possession per 100 Population

The rate of private gun ownership in Russia is 8.92 firearms per 100 people

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Rate of Privately Owned Firearms per 100 Population - World Ranking

In a comparison of the rate of private gun ownership in 179 countries, Russia ranked at No. 682

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Number of Registered Firearms

The number of registered guns in Russia is reported to be 5,000,0001

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Rate of Registered Firearms per 100 Population

The rate of registered firearms per 100 people in Russia is 3.503

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Number of Privately Owned Rifles

In Russia, the number of rifles in civilian possession is reported to be 226,0004

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Number of Privately Owned Shotguns

In Russia, the number of shotguns in civilian possession is reported to be 3,410,000