Hosea 4:6 and many other Bible verses warn against willful ignorance. This is an encouragement to read The Word so that you can be informed of the Truth; a call to arm yourself with facts so to speak.
This has other applications, because how can you be a good spokesman if you are uninformed?
With that in mind, I encourage you to take a look at Gun Facts - a very informative website to arm yourself with quick and to the point facts on gun issues. This is an excellent resource of information covering just about every political hot point on gun control.
Go check it out!