I was reading some websites, and I read something about Chemtrails. Chemtrails are supposively these clouds of gas that the U.S. government sprays out of planes that releases toxic gases into the air. These gases are supposed to make our immune systems weaker, so that the government can control our population. Some think the government can even change weather by these things.
I know the government does a lot of secret stuff that are cruel and immoral, but going to these measures? I don't believe it. But I don't know what could these planes be spraying? I saw some pictures, and it looks really fishy. These aren't crop dusters or anything of the sort, because they've actually sprayed above major cities like New York. Some are even government planes (I saw some pictures of USAF and Navy aircraft).
What do you think of this? What do you think these planes are actually spraying, and why?