Why does Thanos kill half the universe?

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Tags

1. #infinity
2. #defeating
3. #villainous
4. #earth
5. #against
6. #stolen
7. #universe
8. #after
9. #powers
10. #heroes
11. #remaining
12. #nebula
13. #thanos
14. #living
15. #leads
16. #granddaughter
17. #beings
18. #gauntlet
19. #warlock