Politicians in Germany say they have received death threats after voting to recognise the Armenian genocide.

Turkey's president Recep Tayyip Erdoğan accused German MPs of Turkish origin of having "impure blood", and some have been given additional police protection amid fears of attacks.

At a rally in Turkey, Erdoğan described MPs who backed the Armenia motion as "the long arm of the separatist terrorists in [Turkey]", in remarks broadcast on state television.

According to the motion, the Armenian Genocide "is exemplary for the history of mass destruction, ethnic cleansing, expulsions and genocides which marks the 20th century in such a terrible way." It also acknowleges that Germany stood by and allowed the massacre to occur.

Armenians mark 101 years since genocide Show all 10 1 /10 Armenians mark 101 years since genocide Armenians mark 101 years since genocide Armenian people carry torches during a march to commemorate the mass killings of Armenians Getty Armenians mark 101 years since genocide Armenian people take part in a march in commemoration of the 101th anniversary of the mass killings of Armenians by Ottoman forces in 1915 Getty Armenians mark 101 years since genocide People hold a flag during the laying of the flowers at the Genocide Memorial in Yerevan Getty Armenians mark 101 years since genocide President Serzh Sargsyan and actor George Clooney attend the laying of the flowers at the Genocide Memorial in Yerevan Getty Armenians mark 101 years since genocide Armenian clergymen, US actor George Clooney, center, Armenian President Serzh Sargsyan, second right front, and guests attend a ceremony at a memorial to Armenians killed by the Ottoman Turks, in Yerevan AP Armenians mark 101 years since genocide Armenian President Serzh Sarkisian (C,R) and US actor George Clooney (C) attend a ceremony at the Genocide Memorial in Yerevan Getty Armenians mark 101 years since genocide A general view of attendees and mount Ararat during the laying of the flowers at the Genocide Memorial in Yerevan Getty Armenians mark 101 years since genocide Lebanese of Armenian descent burn an effigy of Turkish president Erdogan during a protest in front the house of Turkish Ambassador to mark the 101st anniversary of the mass killing of Armenians in the Ottoman Empire in 1915, near Beirut, Lebanon EPA Armenians mark 101 years since genocide Activists hold portraits of victims during a silent demonstration to commemorate the mass killings of Armenians by Ottoman Turks in Istanbul Reuters Armenians mark 101 years since genocide Activists hold portraits of victims during a silent demonstration to commemorate the mass killings of Armenians by Ottoman Turks in Istanbul Reuters

Green leader Cem Özdemir and his fellow party member Özcan Mutlu are Turkish-born politicians now resident in Germany, who have both received death threats at the culmination of their campaign for the incident to be recognised.

"I am seriously worried," Mr Mutlu told German broadcaster ARD on Sunday evening. “I've never experienced this. Some manic, crazy person might hear that and think 'the leader has given his orders'.”

More than one million Armenians lost their lives in the massacre at the hands of the Ottoman empire, between 1915 and 1916.

101-year-old survivor remembers Armenian mass killing

France, Italy, Canada and Russia are among 29 nations that have explicitly acknowledged the existence of the slaughter known to Armenians as the "great crime".

But the Turkish state does not acknowledge the events.

The UK, the US and most other countries have failed to adopt an official position on the matter.