In the year 620 AD, the prophet sent Khaled-ebn-valid to the Bani Hares tribe to make them become moselms, and emphasized that should they refuse to become moslems, he should make war with them. Khaled (who was famous for his massacres of the tribes of Arabia) reminded the leaders of the Bani Hares tribe to "convert to islam in order to remain alive". The leaders of Bani Hares, fearing the lives of their people, converted to islam, and went with Khaled to see mohammad. Mohammad emphasized to the representatives of the Bani Hares tribe that "if khaled had not written that you have converted to islam, I would have rolled your heads beneath your feet"

The slogans [I dont know the meaning of the first phrase] and "there is no obligation in religion" did not stop the prophet mohammad to summarily behead followers of other religions ("people of the book" [ie, jews]) for not converting to islam, such that in the case of the Bani Quraizeh tribe, after they surrendred following a war [with mohammad's army], it was ordered [by mohammad] that 900 of their men and youth be beheaded, and their property was taken as war booty, their women and children as slaves, and devided among the moslems. (1) Tabbari [arab historian] reminds us that "the prophet ordered that holes [mass graves] be dug in the ground, and "imam" ali and zobeir cut off their heads in mohammad's presense." [see picture below] (2)

In such wars, the moslem arabs did not even refrain from sleaping with [having sex] the married wives of the captured men, but ofcourse this was also permitted in the qoran.(3)

"the prophet ordered that holes [mass graves] be dug in the ground, and "imam" ali and zobeir cut off their heads in mohammad's presense."

Today majority of terrorists are of Moslem origin and they obviously get the inspiration from their so called holy prophet. Mohammad was the one who started terrorising the political enemies during his time with the same methods used today by molsem terrorist. He also got help in form of revelation from Allah.

[al-Ma'idah 5:33] The only reward of those who make war upon Allah and His messenger and strive after corruption in the land will be that they will be killed or crucified, or have their hands and feet on alternate sides cut off, or will be expelled out of the land.

[an-Nisa' 4:89] ...Choose not friends from them till they forsake their homes in the way of Allah; if they turn back then take them and kill them wherever ye find them.