Justin Bieber caused 9/11
I really don't care for the named celebrity, but for the sake of argument I shall prove it highly unlikely he caused the 9/11 Terrorist Attacks .
Born March 1st 1994 in Canada, Justin Drew Bieber (, henceforth referred to as JB) was seven years old at the time of the terrorist attacks. The terrorist attacks began their planning in 1996 , when JB was no more than two years old. As individual two year olds are not generally international news, the blame for violent terrorist attacks should not be assigned to babies.
Sources (wiki links are included for general overview, and are date set for the current versions when I read them):
"He is an obvious terrorist"
The Merriam-Webster dictionary defines terrorism (or terrorist) as "the systematic use of terror especially as a means of coercion" . What is JB coercing (to restrain or dominate by force) from us?
"Bieber fever ... turn[s] kids into homosexual brain dead deaf children"
There are conflicting terms within this. How can you measure a braindead child as deaf? Or Homosexual for that matter. I however agree that Bieber Fever is an ugly thing.
"Former member of al Qaeda and a Mexican-Colombian drug cartel"
He's only nineteen years old, and he's been a member of such conflicting groups, I'm quite impressed.
"He will crash the world to apocalypse ... causing a new world order"
Many points here I'm skipping, but basically he's going to destroy the earth; and afterwards bring about a new one? Or was that reference to Apocalypse the X-Men villain? 
"He used to drink orphan blood from hollow skulls from the victims of the holocaust"
His addiction to this is well documented, being the main subject of last summers unforgettable hit biopic Justin Bieber's Beaver, which starred Robin Williams in the title role, and Pauly Shore as the beaver witnessing the young man's spiral into madness. However the relevance to the resolution "Justin Bieber caused 9/11" is just not present.
As Justin Bieber could not have caused the terrorist attacks in question (for starters he was too busy drinking orphan blood), nor has pro given any evidence to suggest otherwise; other reasons behind this debate must be looked at.
The difference between an honorable Samurai, and a disgusting Ronin, is one faithfully serves a master. Japanese codes of honor include such things as committing evil in your masters name, so that he will not have to give the order and thus soil his own honor. So who is pro's master, as he admits to being a Samurai? Is it possible that this debate was created in an effort to get us to listen to a jailbait teenager, repeat "baby baby baby" about a million times  while grabbing his crotch?
samurai forfeited this round.
"He has an army of little innocent girls"
He has failed to soil the innocence of his fanbase.
Assuming he or was Muslim (and that all Muslims are terrorists), this still does not support the claim that he caused 9/11.
"Girls have been 'cutting for bieber'"
"Justin is also an Obama supporter"
I accept that this was intended as a troll debate, but where was the humor? Take a look at a current similar debate by imabench , he supports his side with twisted evidence and sources. This debate just had a shift of BoP to me, but no follow up to refute my evidence that JB could not have caused 9/11. Perhaps this whole thing would have been better as just "JB sucks worse than a [insert derogatory remark here]."
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