Final answer:
The term for attacks on ordinary people to create political fear is terrorism, involving violence or threats to influence society or government.
Step-by-step explanation:
The term that best describes attacks on crowds of ordinary people in order to create fear for a political objective is terrorism. Terrorism involves the use of violence or the threat of violence with the intention to spread terror among civilians, often seeking publicity for a cause and attempting to influence a government or a society. It can be perpetuated by a variety of groups with different ideologies, including political, religious, or social agendas.