Comment: Wow you are really blind then, Israel even has them within papers and government and their level of dishonesty is second to none.   However with regards to just trolls and from the Guardian,  "There’s been an Israeli public relations war for about as long as there’s been an Israel. In Hebrew it’s called “hasbara”, literally meaning “explanation”, and it involves trying to improve the world’s opinion of the country and its causes."
"In 2013, the Israeli government revealed that it recruits “covert units”. These would be staffed by a mixture of international supporters and domestic students, whose high intelligence, low income and familiarity with social media make them generally well suited to professional trolling."
“That is key to defeat the movements pushing to boycott, divest and sanction Israel.” Those who signed up would get quick access to government information, and leaders of student groups would also be awarded scholarships."