The U.S.
Government remains deeply concerned about the heightened threat of terrorist attacks against U.S. citizens and interests abroad.
Like other countries that are members of the Schengen Agreement for free cross-border movement, Greece's open borders with other members of the Schengen zone allow for the possibility of terrorist groups entering/exiting the country with anonymity.
As the first entry point into Schengen from points south and east, Greece's long coastline and many islands increase the possibility that foreign-based terrorists might try to enter Europe through its borders.
Greece continues to experience sporadic violence attributed to terrorist organizations.
In 2012, a previously unknown domestic group placed an improvised explosive device (IED) that failed to detonate in a metro train car, and another group crashed a stolen van into the lobby of a corporate headquarters in Athens before activating an attached improvised incendiary device (IID, also known as a Molotov cocktail).
In 2013, unknown individuals conducted attacks on the homes of journalists and judges, as well as several political party offices, in Athens and Thessaloniki; a previously unknown domestic group claimed responsibility for planting a small bomb in a prominent shopping mall in a northern suburb of Athens, causing minor injuries to two people; and alleged members of the domestic terrorist group Conspiracy of Fire Nuclei were arrested for armed bank robbery in northern Greece.
Strikes and demonstrations are a regular occurrence.
As a result of austerity measures imposed by the government and the ongoing economic recession, labor unions, certain professions, and other groups affected by the current financial crisis hold frequent demonstrations, work stoppages, and marches throughout the center of Athens.
Strikes in the transportation sector often affect traffic and public transportation, to include taxis, ports, and airports; most are of short duration, but you should always reconfirm domestic and international flights before heading to the airport.
Demonstrations also occur annually on November 17, the anniversary of the 1973 student uprising against the military regime in power at the time.
University campuses are exploited as refuges by anarchists and criminals.
Demonstrators frequently congregate in the Polytechnic University area; Exarchia, Omonia, and Syntagma Squares in Athens; and at Aristotle Square, Aristotle University, and the Kamara area in Thessaloniki.
U.S. citizens should be aware of demonstrations and avoid areas where demonstrations are underway.
While most demonstrations and strikes are peaceful, on occasion violent anarchist groups have joined these demonstrations to clash with police and vandalize public and private property.
Riot-control procedures often include the use of tear gas and/or water cannons.
Visitors should stay informed about demonstrations from local news sources and hotel security.
There has been a rise in unprovoked harassment and violent attacks against persons who, because of their complexion, are perceived to be foreign migrants.
U.S. citizens most at risk are those of African, Asian, Hispanic, or Middle Eastern descent.
Travelers are urged to exercise caution, especially in the immediate vicinity of Omonia Square from sunset to sunrise.
Travelers should avoid Exarchia Square and its immediate vicinity at all times.
The U.S.
Embassy has confirmed reports of U.S.
African-American citizens detained by police authorities conducting sweeps for illegal immigrants in Athens.
U.S. citizens are strongly urged to carry a copy of their passport or some form of photo identification with them at all times when traveling in Greece.
