People with very empty lives that try to act tough on the internet, little realising they're making themselves look like total idiots. The only pleasure they have in life is signing into sites like YouTube and leaving stupid comments and sending people stupid messages. Usually they can barely spell or form a coherent sentence.
Internet warrior = Real life coward
Just look at the comments on almost any video on YouTube for an example of internet warriors.
People that spread racism and bigotry through different forms on the internet. They use YouTube, blogs, message boards, and etc. These people are outcasted by society so they do not freely express their toxic views; hence, they use the internet connection in their mom's basement instead. These people are evidence that racial hate, bigotry, xenophobia, etc are still very much alive and well, especially in rural, uneducated, white areas of the United States. It is also a very unsettling fact that these people exist mixed with the general population and that there is mostly no way of telling that they are actually sick and need help.
Internet Warriors do not have the balls to express their views freely in society as the consequences are not pretty.