To rid yourself from an evil as such.
Religious Extremists might, I suppose, take the 'ridance of an evil' to such levels as a war on Infidels/corrupt Western civilisation but I have never met a Fundamentalist Muslim Extremist and so would not know.
I put a Jihad on Kentucky Fried chicken
My Dad thought it would be best to put a Jihad on my Religious Extremist Boyfriend, hence him not being allowed in our house.
I put a Jihad on farts.
Also note, the word Jihad does not mean to kill infidels as is often said by racist fatherless children ie-bastards, but rather defend Islam against those who wish to destroy it. Islam does not say to conquer the world and enslave or kill all infidels.
radical Translation: kill anyone that is not muslim
educated Translation: War within oneself; struggle to find the true meaning of islam