Terrorism hits home

Yesterday, a 17 year old boy and a 20 year old teacher's aid, named Lavan, were killed in a terrorist attack at a school in the town I grew up in. The teacher's aid died protecting students. The 17 year old succumbed to his injuries at the hospital. Another teacher and a 15 year old boy were severly injured, but are no longer looking to shake hands with Charon.
Yesterday, a white man, 21 years old, had decided, because this school had students who don't look like him, that he would go there, armed with large knives, and stab anyone who had the, in his eyes, wrong skin color. The police had to shoot him to stop his rampage. The terrorist died of his injuries at the hospital.

2 dead, 2 severly injured. Several others mildly injured. A school with 400 students. It is the worst terrorist attack on Swedish soil since 1940.

I don't understand it.
I don't understand this hatred so many feel towards humans who happen to just be a little different. This hate some people feel towards those with different skin color, hair color, sexuality, gender, religion, culture, or ethnicity.
We are all humans. We are all "we". How can you hate someone just because they don't look like you?


Rest in peace, Lavan. Your heroism saved many lives. You are a true Swedish hero.



Sources

http://www.aftonbladet.se/nyheter/kolumnister/oisincantwell/article21634251.ab (Swedish)
http://www.theguardian.com/world/2015/oct/22/pupils-wounded-in-sword-attack-at-swedish-school
https://www.rt.com/news/319341-swedish-school-sword-attacker/
http://www.thelocal.se/20151022/masked-man-enters-school-with-sword