Except the Irishman wasn’t replacing anyone. Your argument is stupid.
“Stupid”? Thanks!
“....these new arrivals, impoverished, unskilled, and Catholic, immediately confronted an ancient enemy, the Protestant Scotch-Irish, longtime resident in Philadelphia, proud of their “in” status, mostly skilled workers, and ready, eager, and able to renew the political, economic, social, and religious feuds of the old country. During the 1830s they had organized an Orange Society for that express purpose.”
Elizabeth M. Geffen, “Violence in Pennsylvania in the 1840s and 1850s.” Pennsylvania History
“During the 1830s in rural areas of the U.S., riots for control of job sites broke out among rival labour teams which were from different parts of Ireland, as well as riots between Irish and local American work teams which competed for construction jobs.”
Prince, Carl E. (1985). “The Great ‘Riot Year’: Jacksonian Democracy and Patterns of Violence in 1834”. Journal of the Early Republic.
“The audio recording, “Immigrant Laborers in the Early 20th Century,” describes how West Virginia coal operators fired union laborers and gave the jobs to Irish, Italian and African-American workers because, “[the] coal company owned them.” This competition heightened class tensions and, at the turn of the century, Irish Americans were often antagonized by organizations such as the American Protective Association (APA) and the Ku Klux Klan.”
“Joining the Workforce,” Library of Congress
“....And in the opinion of many Americans, those British landlords were not sending their best people. These people were not like the industrious, Protestant Scotch-Irish immigrants who came to America in large numbers during the colonial era, fought in the Continental Army and tamed the frontier. These people were not only poor, unskilled refugees huddled in rickety tenements. Even worse, they were Catholic.
“The Irish filled the most menial and dangerous jobs, often at low pay. They cut canals. They dug trenches for water and sewer pipes. They laid rail lines. They cleaned houses. They slaved in textile mills. They worked as stevedores, stable workers and blacksmiths. Not only did working-class Americans see the cheaper laborers taking their jobs, some of the Irish refugees even took up arms against their new homeland during the Mexican-American War.
“When America Despised the Irish: The 19th Century’s Refugee Crisis,” History.com
“The Irish immigrants were most certainly not welcomed to America with open arms—quite to the contrary, they were accused of being dirty, vermin-ridden, and diseased. They were called criminals, rapists, and followers of a suspicious foreign religion and a foreign leader. People who had been in the U.S. longer said the Irish were taking jobs from American citizens.”
“The Irish Experience,” National Archive Foundation