Or, for a more realistic example:
Lets suppose hypothetically, that our Nation possibly passed some anti-terror legislation (Patriot Act) that made us paranoid about terrorists. Following that paranoia, they conveniently, lets say, pass a contingency plan, to deal with them (NDAA). Now, the people probably wouldn't think much of this because the Military are our friends, and there hasn't really been any real terrorist threats lately. Then suppose a few "random" mass murders take place and the people start getting worried about being caught in one of those attacks. Suddenly, maybe the people are not so opposed to that contingency plan. These events build for awhile, and public support increases. Now, lets say around this time a power hungry president is nearing the end of his reign. Then, completely unrelated a boogeyman appears (Iran) that causes our nation to go to war. Troop numbers are at an all time high, and everyone is fearing the inevitable attack. Lucky for us, our benevolent hypothetical government is looking out for us, and foils a massive terrorist attack! We are saved!!!! But this government warns us that more is coming, and only they can save us. Save us government save us! And our glorious troops, the ones we honor and support, save us all by arresting "the bad ones" among us. The ones that question government. The ones that save the jews, I mean don't pay taxes. Anddddd we suddenly become Nazi Germany.
That is why we see these false flag attacks. Because they have happened before. Look up the Reichstag Fire and learn about Hitler's ascension to power. We are following the EXACT same path, and that is why we see the signs. We are saying the things we are saying because we have learned from history, and are not too keen to repeat it.