Conspiracy "theories"... or more accurately, just Conspiracies?
Anytime the mainstream media coins something a 'conspiracy theory', instead of not looking into it further (which is the en-trained common practice of sheep), you should actually do the opposite (free-thinking, thinking for yourself, think-outside-the-box, be unique, try something different, not follow the herd majority).
There is a reason 'they' do not want you looking into it further, which is reason enough to look a little more closely.
Wondering who 'they' are? Make a list of all of the 'conspiracy theories' you can think of, assume that they are based, at least somewhat, in fact... and then figure out who stands to benefit from keeping the information suppressed in secret...