http://www.laplazadelmercader.com/14-de-febrero-de-1349/
On February 14, 1349, the St. Valentine Massacre takes place in Strasbourg. Two thousand Jews were burned alive accused of spreading the plague.
It is well known that Jews have always been persecuted in the history of mankind. They have been blamed for the great misfortunes, besides being considered usurers, murderers of children and even antichrists.
Such was the case of the Black Death, which peaked between 1347 and 1353. It is estimated that the Great Death (as it was known before the 19th century) killed 60% of Europeans.
The answer you gave to this deadly epidemic? They accused the Jews of poisoning fountains and wells for the sole purpose of exterminating Christians. The evidence was found in the false confession under torture of a Jew named Agimet in 1348, who acknowledged having thrown a poison into the well from which the people were supplied, under the command of Rabbi Peyret.
This motive was sufficient to begin the persecution towards the Jews, who were exposed to all sorts of barbarities.
And so, on February 14, 1349, two thousand Jews were taken to the cemetery of the French city of Strasbourg, where they were burned on a wooden platform, in addition to imposing a law that forbade to tread that land for 100 years to Jews who They got rid of the murder.
The persecution spread throughout Europe, to the point that in Spain, any Christian was forbidden to associate with any Jew, whom they imprisoned, exterminated and expelled from all parts of the continent.