It may have take then loss of 26 lives at sandy hook elementary to blow up a long overdue conversation about guns but for michael bloomberg it is the 34 lives lost to guns every day in this country... See More
It may have take then loss of 26 lives at sandy hook elementary to blow up a long overdue conversation about guns but for michael bloomberg it is the 34 lives lost to guns every day in this country that fuelled his decades long crusade. He said it is time for president obama to take actions and for the nra to get out of the way. Columbine. Virginia tech. Today the call for tougher gun laws got some star power. An a-list of hollywood celebrities teaming up to release this new video. Demand a plan. Right now. Have people been coming up to you on this issue? Oh, yeah. This is the man behind it, new york city mayor bloomberg, more determined than ever in his fight against gun violence. His number one target the nra. What would you like the nra to know? That I think the public has finally come to the conclusion we are going to do the this whether you like it or not and connecticut is because of some of their actions. You hold them responsibility. I hold you and me responsibility. We didn't pay attention to what our legislators were doing. We have let our society, our country degenerate to the point where we have a murder rate that you cannot compare it to other countries. You can't put it on the same scale. The nra believes that it is working in the best interest of the american people. I don't know. They are not supposed to do that. They are supposed to work in the best interest of gun owners. They don't have a responsibility for the american people. They are paid for by the gun owners. There's nothing wrong with that. It is the rest of us that cave in to them that are irresponsible. A lot of people will be surprised to know fur on the no fly list, you can't fly but you can buy a gun. Absolutely. He says for all of the nra's influence they can be vanquished. They are not that powerful. Their number one priority in the last year was defeating president obama. I think when I remember reading newspapers a month ago he won. This is the latest chapter in the mayor's crusade who says he's attended far too many police funerals. We have to do something to protect those who are trying to protect us. There are bullet -- armor-piercing bullets advertised for sale. The last time I saw a deer wearing a bulletproof vest was a long time ago. The only reason you would buy an armor-piercing bullet is to kill a cop. Reporter: The bloomberg endorsed obama in november he pulls no punches when criticizing him on the gun issue. This last four years it would be fair to say the president has done nothing on the issue. No. He's gone in the wrong direction. He signed two pieces of legislation, one which lets you carry guns in national parks where our kids play and the other one he signed a bill so that you can carry a gun on amtrak. Reporter: Let's look at the assault weapons ban. We had one in the country for ten years. Every single weapon used by the shooter in connecticut would have been okay under the old assault weapons law. All right. So fix it. Reporter: Isn't it hard to define what is an assault weapon because it is so easy to write around, for manufacturers to createeapons that -- if it can fire a lot of bullets quickly. That's a good place to start. Reporter: Hunters would say -- let's say three. If you haven't hit the deer with three shots. You are a lousy shot and the deer deserves to get away. Let's get serious here. That would ban most pistols. Pistols are different. You have to pull the trigger each time. An assault weapon you hold and it goes -- those are fully automatic weons. If you have a big magazining you will solve your problem. You still have to pull a trigger. But 30, 20, 10 bullets before you run out, I would suggest the deer, god wants that deer to. According to gun owners what you described would ban what most hunters use today. If that is what they are using for god's sakes why don't they use dynamite. Make it easier. What's the sport? Reporter: The position a lot of people will say is all you will accomplish is taking guns from the good people and the bad people will still -- that's not true. The statistics say if you have a gun at home you are 22 as likely to shoot a family member or friend as to somebody breaking in. Don't try to go for a gun. Somebody pointing a gun at you, you think you are going to outshoot them, that is one of the stupidest things I have ever heard. Reporter: Some say that is easy for a man to say who has 24-hour police protection. When I come in to interview you, I have to go through metal detectors and men out there with guns to make sure you are safe. There are a lot of people who say let's make our kids safe in the same way. Barbara boxer said the national guard should be deployed. To where. To schools across the country. That's ridiculous. You can't live your life that way. You would be in a prison. Reporter: After a decade of battling this issue, the mayor says the tide may be turning. Are we at the tipping point right now? I hope so but you never know. If the 20 young, 6 and 7-year-olds isn't a good example, I don't know what is. We are killing 34 people in this country every single day.
This transcript has been automatically generated and may not be 100% accurate.