Berlin Christmas massacre follows a long list of attacks.

At least 12 people were killed and 48 more injured when a lorry driven by an unnamed assailant plowed his 18-wheeler truck into a crowd at a Christmas market in Berlin. According to witnesses, the vehicle was traveling at high speed and traveled the entire length of the market before coming to a halt.

Berlin police have reportedly arrested the driver and believe that the act was intentional. The man’s identity has not been released, but German media is reporting he was an asylum seeker from Pakistan or Afghanistan who arrived in February. A dead passenger was found in the cab of the truck. The circumstances of his death have not been revealed.

The attack bore the hallmarks of Islamic terrorism and was eerily reminiscent of an attack carried out by a Muslim terrorist on July 14 in the French city of Nice. That horrific truck attack left 84 dead and more than 300 injured.

The Express reports that German officials had been warned by various intelligence agencies that terrorists would attempt to carry out an attack during the holiday season. The British Foreign Office warned its citizens traveling to Germany to “remain vigilant.”

On November 26, a 12-year-old Iraqi boy attempted to place a bomb in the Christmas market near the Ludwigshafen municipality. The bomb failed to detonate. He tried to execute his plan again on December 5, but alert passersby noticed the suspicious bag and notified authorities who neutralized the bomb. The boy, who under German law cannot be prosecuted because of his age, told authorities that he was working on behalf of ISIS and plans to join the terror group. Absurdly, the boy is currently in the custody child welfare.

Germany has been wracked by a spate of Islamist violence directly linked to irresponsible migrant policies pursued by Chancellor Angela Merkel. Under Merkel’s stewardship, more than 1 million mostly male, Muslim migrants have been allowed entry into Germany and the result has been catastrophic for Germany.

On July 18, 2016 a Muslim immigrant of Afghan nationality boarded a train in Wuerzburg and attacked passengers with an axe, seriously injuring five.

On July 22, 2016, an Iranian shot and killed nine people in a Munich shopping mall.

On July 24, 2016, A Syrian refugee attacked a pregnant woman with a machete in the German city of Reutlingen, murdering her and wounding three others.

On July 24, 2016, A Syrian refugee detonated a bomb at an open-air music festival in the southern city of Ansbach, wounding 12.

On October 16, 2016, a 19-year old medical student and part-time volunteer at a refugee center was raped and murdered by a 17-year-old Afghan refugee. Her corpse was found in a river in Freiburg, Germany.

On October 30, 2016 a 16-year old was stabbed to death in Hamburg. The perpetrator, who was never apprehended, was described as a male between the ages of 23 to 25 who had a “southern appearance.” ISIS claimed responsibility for the attack.

These attacks represent the tip of the iceberg and do not include numerous sexual assaults and other forms of malfeasance committed by Muslim migrants. Many of these attacks simply go unreported, the victims too embarrassed to come forward. In other instances, German police, practicing an extreme form of political correctness, deliberately downplayed the significance of the crimes and discouraged sexual assault victims from pursuing complaints.

What is occurring in Germany is symptomatic of a larger problem afflicting progressive Europe. France, reeling from series of deadly Muslim terror attacks, including bombings, shootings and even a beheading, is under virtual lockdown. The once beautiful city of Brussels is today, virtually unrecognizable with heavily armed soldiers and police patrolling alongside medieval-looking Niqab-clad Muslim women.

Progressive Sweden has absorbed more than 350,000 Muslim Refugees. The Scandinavian nation has pursued near suicidal immigration policies and is teetering on the brink. Sweden is now known as the rape capital of Europe. Numerous areas have been designated as “no-go zones” for law enforcement. These enclaves have become havens for criminal activity, xenophobia, anti-Semitism and other forms of extremism.

This phenomenon was witnessed firsthand by filmmaker Ami Horowitz. As he crossed into a district of Stockholm known as Husby, he was set upon by a group of Muslims, who beat him senseless because he failed to comply quickly enough with their demand to leave the neighborhood.

Had she been elected, Hillary Clinton would have opened the floodgates to Muslim migrants originating from high-risk regions, including Syria, Iraq and Afghanistan. Her loss in the general election serves as a sobering reminder of how the United States narrowly averted disaster.