But the threat is as real from those within that hate the goverment.

Dangerous words that can be easily twisted to political ends depending on the listener. May I try to reword that sentiment?

The threat is real from those who hate, and those who fear, and those who feel helpless.

Whether an enemy is real or imagined, the human animal can be quite violent when it comes to protecting that which they perceive as their own. The American militia movement is filled with those who are AFRAID -- afraid of where the world is going, whether it might leave them behind, and if the new world is one they don't want to live in. These are very normal fears, but simply people who can't (or won't) or never learned how to deal with those feelings. What they can't deal with and understand, they seek to destroy.

On the other hand, we humans are programmed to view threats from outside as threats, and threats from inside as mere challenges.