To see why, imagine an advanced other country - so advanced that their economic system doesn't rely on protecting intellectual property. They've somehow made it work so they don't need those rights and it's even more efficient that way. Now that country will say "the rest of the would should enjoy the freedoms we have", "we'll help those poor Americans to pirate movies they way our people can.". But America doesn't have the advanced economic system and pirating there is actually harmful to their particular type of economy, so that advanced foreign power is not really helping at all.
This is what freedom of political speech is like in many countries. Free speech alone isn't helpful, it's harmful. It creates riots and civil wars. It kills people because the political system isn't able to cope with it. You might say the ends justify the means, but people still get killed and they won't enjoy the ends, even if they somehow do come about. c.f. Syria.