A over aggressive community

Why is the league community so aggressive ? Theres so much negative energy that it drives me crazy ! When did this start ? I can't play a game anymore without being victim or spectator of flaming or insulting ! And how do we know if the flamer are being punish by Riot ? I would like to know if riot really read the reports and i would also like to know what the conditions are for a report to be approved !
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