Why would an American libertarian have anything at all to say or do regarding how Russia runs their state?
If you could seriously have asked that question forty or fifty or sixty or seventy years ago, it would have meant there was something seriously wrong with libertarians (or maybe with you?).
If it was right for Americans concerned about liberty to speak up against foreign governments that they felt infringed on the rights of their citizens then, can it be wrong today?
I'm not saying Beck is right to take the side he takes on this. I really couldn't care one way or the other. To my view, the Russian government didn't go too far.
But if being a libertarian means taking a blind eye to what you think to be violations of rights overseas -- if libertarian liberty stops at the water's edge -- than maybe something is wrong with libertarianism.