THE THOUGHT OF THEIR WIFE WITH ANOTHER MAN will spin most guys into an understandably blind rage. But even if you think she’s cheating with another man in his house, if she’s there of her own free will, the law says you don’t get to enter the home by going full battering ram on the front door (and then the dude). That’s the line 31-year-old John Fisher crossed late last month in Scott County, Missouri, when he went looking for his wife—and ended up getting shot dead for the trouble.

Seventy-two percent of American gun owners say personal protection is their top reason for owning a firearm. This isn't about defensive shootout fantasies or prepping for the apocalypse. It's about gun rights. It's about something every human can relate to—their family's safety in the most sacred of places...their home.

Can I shoot a trespasser—or point a gun at them—if they refuse to leave? In nearly every state, the answer is no—not unless you’re legally justified to use or threaten deadly force. Simple trespassing doesn’t meet that standard. There must be an immediate threat—someone advancing on you with a weapon, about to throw a brick through your window or otherwise threatening serious harm.