organizations?

Another weird question by me. Do you guys really think there are secret orginzation trying to hide the proof of alien activities on/around earth? In that case maybe you could just name your reasons for believing it below oh and if someone's had experiences with something like that then please do type it as well.

Majestic 12 is an organisation i can think of straight away. Then we have the likes of the CIA and in the UK the MOD from whence Nick Pope came out and confessed all. Why do they exist/reasons for beleiving. Well the Cold War had alot to do with it. Things were kept under wraps for 50 years due to that. Neither side wanted the other side to know what it knew! Also Humanity was not ready 50 years ago for First Contact. I think and beleive we are better prepared now for such an event.