On Bloody Sunday, January 30th, 1972 in Derry, 13 people were killed.

Sunday bloody Sunday happened on January 30th 1972

The first Bloody Sunday took place on November 21, 1920.

The second one took place on January 30, 1972.

There have been many days which have been called Bloody Sunday. In Russia, there was one on the 22nd of January 1905. In Ireland there was one on the 21st of November 1920 and another on the 30th of January 1972.

After bloody Sunday, 30th January 1972, the catholics turned strongly against Britain as is was british soldiers that killed the 13 cillians and wounded 17 more.