Part of it has to do with the large numbers of gun owners.
Do you own any property of any kind? What if government came along and made laws to take your property away? Would you be happy about it? Would you be happy if you became less safe because of it?
For example, it has been proven that seat belts in cars save lives. If government made it a law that nobody could have seat belts in their cars, wouldn't at least some people protest?
Government is stealing rights away from people. America is becoming a police state country. Guns are part of the protection... from government. No law enforcement goes into the ghetto unarmed. They might not go in at all, simply because parts of the ghetto are self protected these days... by guns. These ghetto people are not happy about the idea of no protection from government.
Income taxes are increasing. Income taxes are voluntary, but few know how to volunteer out... so, are taxes really voluntary? Aren't taxes really government thievery?
The point? Guns is a big issue because government is becoming the enemy of all people. People had thought government was there to protect them. Guns are the thing that people are falling back on for protection... from government.