Jihad during the 7th century meant war and killing and stuff like that. However, the words of God must be able to stand the trial of time. Now we are in the 21st century already, where killing and other offensive act on people, are not only sinful by God's definition, but also against the definition of laws of any country you can name.
Jihad at this current time, should be the act of evangelism through good work and good example to others. Portraying the correct image of God, loving and merciful. You defend the kingdom of God with godly words and works. Being offensive is only back firing, bad reputation, and even causing people leaving God.