The effect of "Hezbollah's demonstrations" in Lebanon in 2005 is Syria removed all of its military troops from Lebanon.
Explanation:
Hezbollah started as a guerrilla group that deeply rooted its roots into the Lebanon country gradually transforming themselves into a major political and military force. Due to the increased armed movements and whereabouts of Hezbollah, U.N. had demanded its disarmament which proved futile, as Hezbollah used its military power and political strength to grab the deep sentiments of the Lebanon society. Along with these progression, it created institutions that were educational and social running in parallel to Lebanese state, thereby having a major influence in various sectors in Lebanon today.