Anti terrorism is what police departments, the government, the military, and various corporations come up with by way of habits practiced, strategies planned and carried out, techniques voiced, learned, and practiced in order to respond to any sort of terrorist threat or terrorist act, whether it actually happens or is just implied. Anti-terrorism is also known as counter-terrorism. Basically, anti terrorism is anything that keeps an enemy from using terrorism. Several countries have resorted to following anti-terrorism legislation in order to deal with the threat of terrorism on an international level. These countries include the United States, the United Kingdom, Israel and Australia. Anti terrorism can be difficult to enforce because of basic human rights. Many laws have been passed in order to allow countries and states to basically ignore its own legislation in order to defend itself against crime related to terrorism. This type of legislation has been criticized by others.