Most Gun Control Activists don't want to ban guns or repeal the second ammendmant. Many of them, such as Michael Moore even own guns themselves.
Gun Control simply means putting in measures to ensure that guns are not abused and do not fall in the wrong hands. Some commonsense gun control measures include:
Criminal background checks: If you commit a violent crime with a gun you should not be allowed to buy another gun
Ban on the most deadly guns: We wouldn't allow people to carry around plastic explosives or grenades. People can defend themselves with out machine guns or the most deadly military weapons. these weapons would have a greater capacity to harm huge numbers of people than to protect on person or family.
A waiting period to get a gun: Waiting periods allow time to do background checks and to allow a person to calm down in case they were buying the gun just to kill somebody. If someone is in such extreme danger that they can't wait 5 or 10 days for a gun, they should go to the police.
There is really no reason why simple, commonsense gun control measures like these shouldn't be allowed. Gun control doesn't mean no guns, it just means that we can have guns while ensuring our safety.