(And because it's a truism, that should be a tipoff.)
So it's better to march in lockstep, like Republicans since Reagan? Where dissent is handled swiftly and decisively. Like when the formerly-respectable McCain kept standing for his principles - and getting taken to the Republican woodshed for it. The worst was when came out strongly against torture and got "re-educated"; sad and the last time I trusted a word he said.
So what's better? Arguing about principles or being so regimented (and scared) that you end up with the abuses of the Bush junta? Obvious.