Bachmann called out an arbitrary use of government power to the detriment of the people as "tyranny," a word defined as: arbitrary or unrestrained exercise of power; despotic abuse of authority. Disagree if you like, but there's no subtext here.
Lirabaugh was clearly on about defeating Democrats in elections. The point is not that he called someone a dirty word. Again, there's no subtext evident.
I don't even know why you quoted McConnell, is that supposed to imply he wants Obama killed before he can serve a second term?
Finally, none of these people are known for advocating or carrying out aggressive physical confrontation of political opponents. Union activists are.