Peter Moloney has been taking pictures of murals, memorials, parades, military installations, and anything political since 1981, initially focusing on Derry but with increasing attention to Belfast and other cities and towns. He has also collected thousands of pieces of ephemera such as posters and badges. Some of these can be seen at CAIN.
There is a separate blog of his images of murals and memorials. Please click here. The blog is proceeding chronologically; as of the end of August, 2016, it has reached the images from 1987.