It’s alleged that Indian intelligence operatives (or assassins hired by them) have been targeting Sikh activists abroad. The cases cited in this report were in Canada and the USA, but if it’s been happening there, it’s happened in other countries too.

Foreign kill teams on the streets is definitely thriller material, but I don’t think India’s religious turmoil is the background most script writers would run with.

https://theconversation.com/alleged-assassination-plots-in-the-u-s-and-canada-signal-a-more-assertive-indian-foreign-policy-218907