Complex sentence: The roots of the term lie with the terrorists themselves, as they publicly adopted it as evidenced by many public speeches and text by terrorists such as Osama Bin Laden; the term was not placed on them by others.
Split into simpler sentences: The roots of the term lie with the terrorists themselves, as they publicly adopted it as evidenced by many public speeches and text by terrorists such as Osama Bin Laden. Hence, the term was not placed on them by others.