Didn't watch the vids yet, but it's interesting you posted them in the same thread.
A basic method in mind control is setting a tripple-intent. The official intent, the hidden intent that gets revealed and the secret/real intent.
With chemtrails it's:
1. "those are contrails, they don't exist"
2. "okay, they exist but they are for global warming and the health concerns are minimal"
3. They are biological, chemical and radiactive weapons designed to kill and control you.
Most people don't get past 1., most of the rest falls for the revealed intent, which basicly is covering a lie with an even bigger lie.