What did Emperor Nero do to Christians, for his party, because he hated them?

Nero performed the worst atrocities upon his victims; he did not just kill Christians, he wanted to make them suffer first. Nero enjoyed dipping the Christians in wax, and impaling them on poles around his palace, he would then light them on fire, and yell: "Now you truly are the light of the world." Nero also performed many other kinds of torture, often killing them in the Circus Maximus in front of large crowds of spectators where he did some of his most gruesome murders. Here he would wrap Christians up in animal skins and throw them to lions, or dogs who would then tear these men and women apart in front of thousands of entertained spectators. At other times he would crucify them, and after the crowd would get bored, he would set the Christians on fire.

http://www.eyewitnesstohistory.com/christians.htm