CNN —Serbian tennis star Novak Djokovic left a political message on a TV camera lens at the French Open on Monday in response to violent clashes in Kosovo. Following his first-round victory against American Aleksandar Kovacevic, Djokovic wrote “Kosovo is the [heart] of Serbia. Stop the violence” in Serbian on a camera lens, using a heart symbol. I don’t know what will happen.”Djokovic leaves his message on the camera lens after his first-round victory at Roland-Garros. Djokovic is aiming to win his 23rd grand slam title at the French Open, which would move him clear of Rafael Nadal at the top of the men’s all-time list.

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