At the risk of not getting a concrete answer, I wanna ask conspiracy theorists this: If the government is cruel enough to kill its own people at [event], why hasn't it disposed of people like you who "know" the "truth" and could "expose" it?

There are definitely governments that kill their own people (Assad, Putin), but with them it's really obvious. With Putin, his political critics are suddenly "mysteriously gunned down" right by the Kremlin or poisoned with radioactive polonium. It's not subtle. If it were happening here, Alex Jones would be dead by now.