I've found that most of the time it boils down to semantics. People are often meaning very similar things, but saying very different things. Even on the issue of gun control. Ignorance is key here - individuals don't know as much as they think they do about how our system works regarding access to guns. Through education, you'll often find that individuals (specifically not parties) will change large parts of their anti- gun stance once you've gotten through all the rhetoric and misinformation.