There are some individuals, in every religion, that could be considered terrorists.
Examples:
Eric Rudolph
Skinheads
Individual, who assassinated Rabin
All that is necessary, is a such a fervent belief, that objectivity is lost. In other words, the individual loses the ability to have compassion for others.
In Christianity, the Bible is the ultimate authority short of God.
Christians can do bad things, but those bad things are not emblematic of the religion. Christianity is not run as the court system--or shouldn't be. Precedent that is not in the Bible should not count for how Christians should act unless that precedent is traceable to the Bible.
The difference is, you were able to list most of the Jews and "Christians" who've committed terrorist acts in seven words. Try that with Islam.