https://www.buzzfeed.com/jp/saoriibuki/twitter-jp-hate-speech?utm&utm_term=.sq3XlmDLM2#.uy6Rymlz9v

https://headlines.yahoo.co.jp/hl?a=20170909-00010005-dtohoku-l02

https://dot.asahi.com/dot/2017091000006.html

https://mainichi.jp/articles/20170910/ddm/001/040/186000c

http://www.asahi.com/articles/ASK985FH8K98UTFK013.html