By golly we've got rights not to be offended and have the name of the Lord smeeared by freaks I can tell you that much! No one has the "right" to produce ungodly filth! Where did you learn about the founding fathers, in atheist school?
Even for a Christian, blasphemy is more often a virtue than a crime, otherwise they wouldn't deny the existence of so many gods.
Of course you have the right to not be offended. All you have to do is not take offense. It's really up to you whether or not to feel offended by something.And it's not a matter of having the 'right' to produce 'ungodly filth' as you mention, but it's a matter of asking yourself 'who is going to stop me?'.
If your comment is too long, break it into multiple comments and post them all.