Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: A newly released analysis of Charleston church shooter Dylann Storm Roof's hate-filled manifesto has revealed that the 21-year-old murder suspect may have been active on an online white supremacist forum. The group Southern Poverty Law Center, which tracks hate groups around the country, compared the text of Roof's manifesto, which was discovered on his website The Last Rhodesian Saturday, to comments and posts made by user AryanBlood1488 on the site The Daily Stormer and found striking similarities. The SPLC described The Daily Stormer in its report as a neo-Nazi online community run by its publisher, Andrew Anglin, that generates original content and also re-posts articles from other sites promoting the white supremacist agenda.Roof's manifesto was discovered Saturday on his site The Last RhodesianThe 21-year-old accused mass murderer detailed his attitudes towards various minorities, including blacks, Hispanics and JewsSouthern Poverty Law Center ran Roof's writings through a plagiarism detection softwareSPLC's analysis found similarities between Roof's writings and posts made by online user AryanBlood1488 on white supremacist forum 
 Question:Andrew Anglin, the publisher of the Daily Stormer, responded to SPLC's report in a lengthy post Tuesday saying that a person using the handle _ penned about 20 comments on the forum over the past few months.

AryanBlood1488