I seriously doubt you have looked into the charges or the facts of the case - that is not your style. You are just talking out your ear as usual. If you look into it you'll see what Barghouti did, in order to "make his bones", gain street credentials, and raise his popularity during the 2nd intifida.
Islamic State destroys part of Syria's Temple of Bel, monitoring group says (Reuters)
from the article: PA Chairman Abbas issues decree outlawing Hamas armed militias