Daily PSA: If you tell someone they're trash, you're doing YOURSELF a disservice.
Daily reminder to the toxic members of the community that telling someone they suck and constantly berating them will make YOU lose, as well as them. I know I'm not good at League, but if someone tells me I suck at the game and spends the rest of the game berating me for it, expect me to mute you, report you, and also perform poorly as a result. I have seen and been games that are going extremely well, then one toxic player on the losing team decides to make one of their teammates feel like crap, then the entire game just goes downhill from there. The postgame chat doesn't get pretty either.
I don't do well with negative reinforcement, and telling someone they suck is just that: Negative reinforcement. I see people complaining about their teammates a lot on these forums, and 9 posts out of 10, it's usually because of the OP's attitude. Telling someone they suck because they made one bad play is going to make them suck even more. If you want to lose, or have your team do poorly, then continue berating your teammates. If you don't want that to happen, then don't make your support feel like crap for let's say killing a minion. Or don't make your jungler feel like crap for trying to get from one lane to the other, or your adc for dying, or ANY role. In fact, don't make anyone feel like crap.
So, toxic players, please do yourself, as well as everyone else in the community a favor, and DON'T type out toxicity in the chat. You can easily spend that 5-10 seconds thinking of what to do for your next moves or you could even scream at your computer or squeeze a stress ball to vent your frustrations. It is extremely easy to get mad at someone for making a bad play in this game. It's a lot harder to not insult them because of it. Be the bigger person and do the hard part and not insult them. It makes the community a better place to be in, and it makes it a LOT easier for the game to be fun.
The one thing I notice all the time in this community and in real life is that the community is viewed as extremely toxic. There's a club on the campus I'm studying at, and the most common thing I have heard from a lot of the members of that club is that the community is toxic. Even in the forums here and ingame, people complain that the community is toxic. So, as the old adage goes: If you have nothing nice to say, don't say it.
Edit: Some of the posts here not only reinforce my claim that the majority of this community is toxic, but is confirming it.