Definition of terrorism is
terrorism /tĕr′ə-rĭz″əm/
noun
The use of violence or the threat of violence, especially against civilians, in the pursuit of political goals. Resort to terrorizing methods as a means of coercion, or the state of fear and submission produced by the prevalence of such methods. The act of terrorizing, or state of being terrorized; a mode of government by terror or intimidation.
So a definition of terrorist is :
A person who engages in terrorism. One who favors or uses terrorizing methods for the accomplishment of some object, as for coercing a government or a community into the adoption of or submission to a certain course; one who practises terrorism.
So Yes Hamas a guilty of that
Palestinian people NO
jews No
Israeli government ( the jury is out perhaps)