Because it has worked in other countries. Why doesn't Australia, Japan, Canada, etc... have the level of gun crime that we have here? I'll wait for your detailed and insightful answer.
Less scumbags in the population. We have more negroes and hispanic gang bangers, therefore our murder rates are much higher. Compare our murder rates, MINUS these two criminal groups, and we fare better or equal to any other nation you mentioned. Compare America to African nations and Mexico, and you'll see the correlation between their violent gun crime rates and ours. Less negroes and hispanic gang bangers, less incidents of gun violence. Pretty freaking simple concept to understan if you actually looked the statistics and facts based your opinion on them, rather than on info you pull from your ass or get from Pravda West.
Oh so it's all the fault of blacks and Mexicans? That's your stance.
Remind me again of the ethnicity of the shooter in Sandy Hook?
How about the Shooter in the theater in Aurora?
How about the shooters in Columbine?
How about the shooter in Virginia Tech?
How about the shooter in AZ who shot Rep. Giffords?
How about the shooter in Fort Hood?
Shall I keep going?
And I'm willing to look at some stats that you speak of that remove "negroes and hispanics" from our gun violence data. Where did you get your info?