In Defense of Supports
To those in league who get angry when a support gets a kill or has more than 0 as a cs score, get over it. I recently had the unpleasant experience of laning with a particularly greedy ADC as Malphite. By minute 20 I was 2/0/2 and my adc goes off on me. First it was because I accidentally killed a cannon minion, to which he said stop taking my cs (I had 2 cs at 10 minutes). He also complained about me ks'ing him. While I did have two kills one was because I was procing my slow after ulting the enemy adc so that ashe could catch him and get the kill, it unfortunately did enough to kill him. The second was a follow up on Ashe's arrow. She was not yet in AA range and her stun had just worn off so I ulted rather than letting him escape.
The other part is that some of my teammates agreed that "What does a support need gold for?" and that my job is to "get the ADC fed". While I agree that you usually dont want your kills stacked on your support they still need gold to be of any relevance. Additionally I had already done my job as support. I had a sight stone, I got coin to speed us up following an Ashe arrow engage and I chose Malphite expressly to combo my ult with Ashe and delete squishies. But part of that requires me to do enough damage that our ults combined can outright kill or nearly kill the target.
Basically this experience irritated me so much because the support is part of your team, and the whole team needs gold. The support is already choosing to get less than everyone for the most part simply by being a support. So don't get greedy and have the mindset that any kill a support gets is stolen property. If someone chose a support that does decent damage, you should expect some kills from them and that can only help increase their damage.
Support requires you to peel for your allies, set up vision, zone enemies, follow up on engages, sacrifice your own income, and potentially sacrifice yourself to save an ally. A few kills here and there aren't the end of the world. Especially if the ADC already has 5 kills at that point (which she did). Give the support some credit, let them have some gold or kills occasionally. Its not the end of the world and it might even help your lane and game.