Do Supports Get Treated like slaves
I feel like supports get treated like slaves always following orders expecting to die if your Adc messes up
and always blaming the support for them losing lane or getting killed 
I feel like supports get treated like slaves always following orders expecting to die if your Adc messes up
and always blaming the support for them losing lane or getting killed 
no, only bad supports get bullied
No they don't.
I feel exactly the opposite, but my opinion is completely biased because i'm a Vayne 1 trick. Honestly, the support role is much more important and impactful than any other season i have played, your lane now absolutely gets decided by the support, they hold more influence early in the game. I'm not saying it's always the sups fault and that they never get treated like trash, but i get treated like shit plenty by supports to, it's just the lol community being toxic, it's pretty normal. But from a gameplay perspective i think the reason ad's might be getting more frustrated this season is because our role has been racused from a "cary" to siedge equipment/secondary support, we don't hold nearly as much impact in the game so we rely much more on the team now, it's just a very frustrating role to play now.
In some cases, yes. In other cases I assert my dominance as the support (xD). Basically I give them logic to support my decision. "I gave you all the support I could to save you, you should have kept running." "I saved the adc so it was worth it. " Any role can potentially be treated like a slave though. Sometimes sacrificing yourself is the right call, doesn't make me a slave.
Not since Season 3 / early season 4
no, but i feel like people who do say this are overdramatic support players victimizing themselves
edit: also what the fuck are you building on supports. buy a sightstone and a gold income item please. nobody likes supports who build straight ap