My friend just told me this. He was playing ranked and his adc was Croat while support on his team was a Serb. When adc found out that his support is Serb (Croatia and Serbia have long history of wars,unions then again wars) he started inting,game didnt even started properly. Adc said "i am not playing with Serb support" and went to jungle stealing camps and giving free kills to enemy team. While doing that he was throwing insults on Serbs. I just can't belive that someone is keen to int and trol lthe whole game because his teammate in a virtual game is some different nationality. It is kinda funny and sad. Just had to share this with someone, I lost faith in humans.