Answer:
People, not guns, are violent.
Step-by-step explanation:
If you are the person writing an essay in favor of gun control, then you must likely believe that guns are unnecessary, that there are too many in circulation or that they can be the cause of great tragedies. A counterargument would have to convey the opposite idea. Therefore, an argument that states that people, not guns, cause violence would support the idea of gun control being unnecessary.