People are influenced in their opinions by a variety of people, history and situations; family, friends and communities all influence individuals and have certain expectations.
Religious sectarianism was rife throughout Scotland for much of the century, but was again concentrated in Glasgow.
Although the country had been predominantly Protestant since the Reformation, an influx of Irish immigrants, drawn to the industry on Clydeside throughout the 19th and early 20th century, had established a large Catholic community.
Irish immigration actually had slowed considerably during the Depression compared to earlier decades, however, huge levels of unemployment and fierce competition in the labour market inflamed an already volatile situation.
Unemployed, skilled labourers from the Protestant community complained bitterly about Irish immigrants taking 'their jobs' and this brought ruthless discrimination in the labour market, with Orange and Masonic Lodges often influencing the allocation of jobs within Clydeside Industry in favour of Protestant workers.
The Church of Scotland and other Protestant institutions positively encouraged this anti-Catholic feeling at the time, and sectarianism was entrenched in many of Scotland's most basic institutions.
Children generally went to either Catholic or Protestant schools, they lived in different streets and areas of the city, and the rivalry was played out on the football field between Rangers in the west of the city and Celtic in the east.
In the early 1930s the Scottish Protestant League became a strong political force in Glasgow, especially amongst the skilled working classes in Govanhill, Kinning park and other areas in the West of Glasgow.
It did seem for a while that these organisations could command a lot of political support, which undoubtedly worried both Labour and the Tories, however, these groups were, in general, considered to be extremist by the mainstream press and the middle classes, and had no real political future.
Sectarianism remains a problem in 21st century Scotland, although the problem has diminished with each new generation as the economic and social circumstances which created such a situation becomes less relevant.