First of all, I must say to EVERY ONE OUT THERE, you have to respect whatever religion we are talking about. Writers are not supposed to hurt people, are we?
Ans: Mohammad (P.B.U.H) forgave that old woman, who always used to threw trash on him (on daily basis), once she didn't do it, Mohammad (P.B.U.H) asked about her and found she was ill, he went to her house, served her, and blessed her.
Mohammad (P.B.U.H) forgave the assassin that killed his uncle.
Mohammad (P.B.U.H) forgave all the militants and people of Mecca after conquering it.
I think history has been filled with ENOUGH evidences if one wants to believe.
And PLEASE PLEASE PLEASE, ... do NOT believe what our MOLVI and talk shows people say. They are not very much literate about ISLAM. Read QURAN and find it yourself, rather than believing someone else. ISLAM is all about PEACE.
E.g: "SPREADING ISLAM, BY THE WAY OF SWORD, HAS BEEN PROHIBITED BY QURAN and ALLAH"
People spread false perception about Islam. Please don't get fooled. Find the truth yourself.