Wahhabism

Wahabis/Salafists are the ones who comprise Al-Qaeda members, found mostly around Saudi Arabia, Pakistan, Afghanistan and elsewhere. they are pretty much, the Muslim version of the Evangelical church; only, if they're not kept under control, they can get dangerous. Salafists are the ones who are sniper-shooting Syrians and doing suicide-bombings around Syria and Iraq.
please look at this short beautiful story of:
Ibn Saud, Wahhabis, and Oil, to 1945
Wahhabism and the Saud Family; oil and geologists from the United States
http://www.fsmitha.com/h2/ch17arab.html

please distinguish between sunni Muslims and extremist Wahhabi (Salafi).
Salaf literally means "past people"[=Sahaba] and Salafi means who follows Sahaba of prophet. but today Salafi is same as Wahhabi. but they do not like to be called Wahhabi. they prefer to be called Salafi. Wahhabism is founded by Muhammad ibn Abd al-Wahhab based on beliefs of Ibn Taymiyyah in Saudi Arabia. today Wahhabism is based in Saudi Arabia and is propagating beliefs of Wahhabism in world very powerful and with high financial support by petrodollars from Saudi Royal family.
Wahhabi is in fact supported by US, Israel and England to make conflict inside Muslims and finally to destroy Islam.
Ashura day keep the message of Imam Hussein (sa) alive to reach all humans.
Husain (sa) wanted to send his message with his blood to all the world and to all the humans.
the message of Hussain is:
there is two different Kind of Islam.
the pure Islam of prophet and Islam of Yazid (Ummayids) who celebrated killing of Husain (sa) the Imam and real Caliph of their time.
Husain (sa) said:
with Yazid, Salam [bye] to Islam.

please read:
http://pastebin.com/4eGMQmWV

Quran says:
"[en.sahih] Have you made the providing of water for the pilgrim and the maintenance of al-Masjid al-Haram equal to [the deeds of] one who believes in Allah and the Last Day and strives in the cause of Allah? They are not equal in the sight of Allah. And Allah does not guide the wrongdoing people. [9:19]"

please read this books to know Wahhabism more:
http://www.al-islam.org/wahhabism
http://www.al-islam.org/new-analysis-wahhabi-doctrines/
http://www.al-islam.org/truthaboutshiah/

Wahhabism is the continue of deviated version of Islam made by Yazid and Umayyad dynasty to can control ignorant Muslims for their worldly greeds.
top Umayyad leaders (abu sufyan,..) did not have any belief in God and Quran and revelation.

without Wahhabism shia and sunni have no problem and are friends.