evidence: The first peace line of the Troubles came on August 15 1969, when soldiers from the British Army’s Third Battalion of the Light Infantry formed a human chain across an interface between the Falls and Shankill Roads to separate Catholic and Protestant rioters. [...] On September 10 1969, British Army engineers began to construct the first peace line at Cupar Street with two lines of 5ft high barbed wire being erected at the interface between the Falls and Shankill. The barbed wire would later be replaced with 10ft high corrugated iron fencing. [...] However, even after 50 years’ experience of peace walls the tenuous nature of interface tensions was witnessed once again in April 2021 when rioting broke out at a barrier at Lanark Way between the Shankill and Falls Roads following loyalist protests against the British government and EU Protocol agreement over Brexit.