1-Holy Prophet (PBUH) married a woman after killing her husband and father, so how could she be happy or even willing for it?
2-The rules of Iddah were violated in this marriage.
Narrated Abdullah bin 'Umar (RA): Allah's Messenger (pbuh) said, "Evil omen is in the women, the house and the horse." (Bukhari, Hadith 4703)
Crusades, as they say, may have ended centuries ago but the crusading spirit is alive still. Innumerable polemics written against Islam and slanders against the Holy Prophet (pbuh) and the Holy Quran are a practical manifestation of the same.
Muslims have been putting in their efforts to launch an academic Jihad against this spirit. But in these times when the World Wide Web paradigm has exposed the innocent minds to this ever rising crusading onslaught there is a necessity to arm and enable each one of the Muslims to take up this challenge. In the following lines I give certain points that will, Insha’Allah, help you understand the roots of the lies against Islam and, if a little effort is put in, enable you to expose them.