Why did Taylor Swift write bad blood?

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Tags

1. #about
2. #stone
3. #hiring
4. #artist
5. #subject
6. #blood
7. #concert
8. #undisclosed
9. #perry
10. #publications
11. #speculated
12. #female
13. #attempted
14. #billboard
15. #sabotage
16. #worked
17. #rolling
18. #swift
19. #tours
20. #people
21. #wrote
22. #musician
23. #washington