OP and others are completely dead-ass wrong if they think Libertarians would somehow side with the Ferguson race rioters. Prominent LP members have supported
far different assessment of the problem and have been quick to
reassert the rule of law to end riots. Abuse of civil liberties is not license for you to go out and loot and burn shit, it's a wake up call to
act like a reasonable citizen instead of hoodlums.
I think trying to take sides with rioters or not taking sides with them is completely missing the larger issue. Riots, in and of themselves, are symptoms of larger cultural issues. Whether or not one agrees with looting, rioting, or aggressive protests is a completely separate (and IMO lesser) discussion.
Getting angry at those that loot and riot is deflecting away from the actual issue that you touch on, "abuse of civil liberties." In America we like to focus on the effects instead of the cause. This is immediately apparent in the way we treat the mentally ill. In this case, we are institutionally ill and instead of focusing back on the cause, the media likes to hone in on the rioters.
The same thing happened with Snowden. The discussion outside of technical websites was if Snowden was a traitor or not. Instead of focusing on an entire US department wantonly spying on American citizens and hacking US corporations, we are worried about the whistleblower's potential legal troubles. And even when they do draw their attention to the issues he brought to light the most common response was "Of course they are spying on us." No wonder people's rights are being violated left and right, we seem to not give a shit about them until it happens to us. Luckily, that is starting to change.