I am not good at defining things, what do you want me to do? I am pretty sure you can see examples on Youtube and elsewhere but SJWs are those far leftists who get offended by everything and want to force their viewpoints on everyone else. Political correctness is basically replacing words are phrases that are deemed "offensive" with words that are less offensive unfortunately this causes censorship and people can't say what they want to say.
I guess I'm going to renege a bit in the interest of asking some questions on this:
1. Which "words and phrases" are being replaced by political correctness? Since you are citing political correctness as a problem that stifles words and phrases, I would like specific examples.
2. How does replacing "offensive" words and phrases "with words that are less offensive" stifle intelligent debate? You can still effectively make the same points, only with slightly different wording to convey the message; it's like telling a story while not saying the "fuck" word in polite company.
3. To what extent should society accept these offensive "words and phrases"? And I want to put emphasis on your use of "words and phrases," in contrast to ideas or thoughts. Words have varying degrees of utility and vulgarity. For example, words like esoteric, opulent, elide, and panacea have high utility (they are fun to say, good to drop in conversation, and are quite specific in their meaning and usage) without vulgarity. In contrast, words and phrases like faggot, "white power," and the n-word have less value (or specificity for that matter) and considerably more vulgarity. So, where do you draw the line on words among these two considerations?
4. Maybe my career path has influenced my views, but I tend to see censorship more as the state restriction on speech, not necessarily adverse social opinions. Said differently, if the state is arresting you for saying something (other than a confession), that is probably a violation of free speech. On the other hand, if society is rejecting what you have to say, then that is the free market place of ideas saying your views have no value to society. So, to what extent should society have to accept offensive words and phrases? If Fred calls Jim the n-word, should society not be free to shun (rather than accept) Fred for his callous disregard for basic decency?
5. How does the concept of "social justice warriors" validate Casino Mussolini for president? Social Justice Warriors are typically people on the internet who get called "cucks" by people with an odd penchant for a certain internet frog: not politicians or legislators. Saying "I'm voting for Donald Trump because of social justice warriors" is rather akin to saying "I'm voting for Frank Underwood so that Tyrion doesn't get killed in season 7": It's a non sequitur wherein the action taken is unrelated to the perceived problem.