"However, if I were a politician, I wouldn't have blocked it from being published." Tell that to the 50 Million people that died as a result.
You couldn't have been a politician to block it unless you were a part of the Nazi party, or an opposition party who I think were outlawed anyway.
Thoughts lead to words lead to actions. If you sanction the words then you sanction the action to a great degree - especially when the this flow on effect is rapid. If you feel the strong should survive, then give them free reign, but to stand there in smug glee saying, "I let them publish Mein Kamp, but didn't do so myself" to me resembles the same evil as doing nothing in front of the cattle trucks as they were being loaded.
The difficulty is that at the time, you couldn't really speak out.. and if you did, you might join the rank and file of those destined for death. In this environment, people's souls are silenced and one can become spineless.
History is reoccuring, Iran is building nukes to take out Israel and eventually other non-Muslim countries who don't cower to Islamic ideals. Hiding this latter reality is what assists Iranian nuclear development. This freedom-for-all line of thinking says "Everything's hunky dory, as long as Israel has anti-ballistics, then it's fair game. As long as I can throw abuse back at you then great." But it is not the case that freedom is always 'good' and restriction is not, because evil must be ruthlessly exposed and curtailed for there to be any evolution, and for higher states of hapiness to be experienced.