Why is the LGBT symbol rainbow?

Related questions

1. What does Lbgtq mean?
2. Can you see a rainbow from space?
3. Is there a pansexual flag?
4. What does LGBT Q stand for?
5. What causes a rainbow?
6. What does the rainbow represent in the Bible?
7. Why is a rainbow the LGBT symbol?
8. Why rainbow is the color of LGBT?
9. Who was the first LGBT person?
10. What does pink yellow and blue mean?

Tags

1. #natural
2. #horizontally
3. #reflect
4. #often
5. #rights
6. #rainbow
7. #marches
8. #diversity
9. #would
10. #typically
11. #during
12. #symbol
13. #community
14. #pride
15. #flown
16. #colors
17. #stripe