Geoffrey Street, near Crumlin Road, Belfast, 1973
The Bogside, Derry City, 1972.
The graffiti in this next image comprises the slogan "Easter 1916-72", an Irish tricolour, and "Provisionals For Freedom". The first slogan obviously commemorates the 1916 Rising although I'm not sure why 72 was included. The latter, sounding almost like an advertising slogan, espouses support for the Provisional IRA. In the background is the Walker Monument which was blown up by the aforementioned Provisional IRA in 1973. All that remains of it in public view is the plinth.
Belfast, 1970s, I am not sure of the locale.
The presence of a Vanguard Unionist graffito indicates this photo was probably taken in 1972 or shortly thereafter. The three most prominent slogans are "Paisley For P.M.", "UVF", and "We Are The People". The first slogan is somewhat prescient with Ian Paisley having served as First Minister of Northern Ireland over 30 years later. The second stands for the Ulster Volunteer Force, a Protestant Loyalist paramilitary group. The last one had me perplexed for a minute as I had only ever heard "We Are The People" in the song Free The People by the Dubliners, an anti-internment ballad. However, it seems in this context it is a popular Glasgow Rangers slogan, a team associated with Northern Irish Protestant culture.
Armagh City, again I don't know what street/area this is, early 1970s.
This last example of graffiti in Northern Ireland features a grocer's apostrophe. First there's "Pig's Out", an anti-police sentiment voiced by many people in many different places over the years, but clearly understandable in the context of Catholic Republican animosity as regards the then RUC. The second part is calling for a "Worker's Republic" which is a term most associated with James Connolly. Many Irish Republican groups called for a 32-county Workers' Republic to be formed, that is not only an independent Ireland, free of British rule, but also organised on socialist principles.
All of the above examples display touchstones of the sociopolitical culture of their respective communities. One thing they all have in common is they're very basic. That is, white paint and a simple font is used in each example. A simple Irish Tricolour in the second example is the only graphic to be seen. In this sense these examples of graffiti diverge greatly from later luridly coloured political murals and indeed modern day graffiti which is often colourful and sophisticated in a visual sense.
*I am fully aware that there are Republicans who aren't Catholic and that there are Unionists who aren't Protestant but for the sake of brevity I have used Catholic Republican and Protestant Unionist.