Get rid of the liberals and the welfare mentality.
Look at where the majority of violent crimes are committed and deduce who is committing them. The vast majority happen in major metropolitan areas...ie: big cities.
Study the populous of these cities, and you will see who is committing the crimes.
Bus them out to the Grand Canyon and line them up on the edge of the highest canyon wall, making sure they are all tethered together.
Give the first one a good pat on the back, and watch how fast our problems disappear.
This would get rid of 90 % of our violent crimes, improve our cities, and be a huge step in balancing our national budget.