Personally, [And remember, this is my opinion, so take it for what it is worth]
My opinion of it is that those caught or are known to have done the beheading should be crucified.
Nail them to a cross. Put them out in the desert where their "followers" can see.
At the very least, there should be some retaliation.
Why there isn't, is beyond me.
But we're the US, we're beyond those types of things and that would be inhumane, we can't treat them unkindly.
You have to wonder if the folks who believe that would still take that stance if it was one of their family members who were beheaded.
Now I heard that they are going to do another one.
When does the US say we have enough of this and stomp on them?
And to be honest, I can't say that liberals are totally to blame. Because those who aren't liberals shouldn't have allowed things to get to this point.
I'm not a liberal, but people forgot how to stand up for themselves. Our nation needs to get off this stance of being afraid to stand up for ourselves or offending folks.
We all have our own views and opinions. It doesn't mean that their views have any less meaning.
With that said, I don't believe folks have the right to their beliefs when it harms another.