Time to pull out the holy book of wikipedia

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Emo, is a slang term a range of fashion styles and attitudes that are affiliated with emo music and related scenes.
The term
emo is exclusively used to describe a genre of music that was created in Washington D.C. in the 1980s. During the late 1990s, just as emo music began to emerge out from the underground and into the public, the term has been used to describe a referance for more than just music.
The exact origin of the word emo is shrouded in mystery. A 1985 interview by Rites of Spring in Flipside Magazine, they stated that some of their fans in D.C. were starting to call them "emo", mainly because of the state of emotion the band displayed during their shows. In recent years, the word has been viewed as simply being short for "emotional".
In the 2000s, Bands such as the Dashboard Confessional began to popularise a more dramatic and personal form of "emo", which used lytics that has a greater appeal to teenagers experiences life and love for the very first time. As the genre moved into the mainstream, the term has been started to be used to described what is precived by people outside the sean as the overweight melodrama of the music. Comments "dont be so emo" and "cheer up, emo kid" drove the beilief amongs the deriders that fans of emo music too themselves too seriously and were simply looking for drama that it does not exists.
In the fashon and culture relm of "emo". There are two popular forms of fashon associated with emo. The first is what came out of the 1990s "indie emo" scene and connections to indie and punk rock. worn clothing (especialy denim), khaki colors, and T-shirts with various random text, and oftenly images from 1980s. They may have characters such as Emily the Strange and characters from the movie
The Nightmare Before Christmas on their aparael.
The other popular style of dress (which has been overly said in this tread) that focuses on darker colors. Makes wearing pants that are ment for females, lip, eyebrow, and labret pearings, and dark make-up on both males and females. A common accessory for both genders of this emo subgroup, are glasses with dark or black, thick rims.
What is common for both styles is that the brand Converse All-Star brand shoes are common as well as Vans shoes.
The modern emo scene has evolved and developed into a gay friendly scene. Though its unclear if its related to the decreace of the macho and masculinity elements of the genre itself or the gay friendly nature of the scene. It has become common for detractors to use "emo" in combination with other discriminating GLBT slurs, such as "emo fag".
The most common stereotype that associates with the emo culture has to do with self-harm. Most commonly wrist slashing, mostly due because of the song's lyrics conforming to the public eye which speaks of suicide.
"emo" has also came into the internet culture in recent years as a derogatory insult, especialy towards posters and users who appear emotionally unstable or that talk about issues about their lives to other people in public forums (CFC, Apolyton, etc) or chat rooms (AOL, IRC, ICQ, etc). Similar to profanity, it tends to be used as an insult even when it is not directly applicable. Comments such as "dont cry emo kid" are oftenly used frequently as a quick brush-off in this context.
Summarised from Wikipedia's entery on "emo"
With that out of the way. I know a few people in my college that fits into the emo. I do not dislike them because they are quite nice people when you get to know their personality and that as a Christian that I should not judge other people. Thou shall not judge and ye not be judged.