I haven't seen memes about Hillary being killed, but I'm not on here as much as others. I have seen memes "joking" about Hillary murdering others, making it seem like an accident or suicide. That's because there are a lot of dead people around the Clintons who've died mysteriously or by suicide.
It's not everyone, but the left seems to rejoice in the deaths or suffering of conservatives and especially of religious, hoping that they're in hell. Someone has cancer - that's great! That means that they'll be dead soon. They seem to think it's hilarious.
All of the memes joking about Herman Cain's passing got to me. He seemed to be a good person. I found it to be very disrespectful. This was my take on what I was reading, so I made a meme. You can have your own take on it.