Irish Canadians
The first waves of Irish immigrants took place between 1763 and 1880. when ten thousand Irish immigrants arrived on the Island. From 1800 to 1850, "10,000 immigrants from every county in Ireland" had settled in Prince Edward Island and represented 25% of the Island population by 1850.
Racism in the United States
Various European American immigrant groups have been subject to discrimination either on the basis of their immigrant status (known as "Nativism") or on the basis of their ethnicities (country of origin).
In the 19th century, this was particularly true of anti-Irish prejudice, which was partly anti-Catholic sentiment, partly anti-Irish as an ethnicity. This was especially true for Irish Catholics who immigrated to the U.S. in the mid-19th century; the large number of Irish (both Catholic and Protestant) who settled in America in the 18th century had largely (but not entirely) escaped such discrimination and eventually blended into the American white population. During the 1830s in the U.S., riots for control of job sites broke out in rural areas among rival labour teams from different parts of Ireland, and between Irish and local American work teams competing for construction jobs.