While the The Troubles are categorized more generally as conflicts between Republicans and Loyalists, one would be hard-pressed to claim they didn't include extremely sectarian Catholic vs Protestant elements as well. In a situation where people could occasionally be picked up off the street and randomly murdered for being in an area assumed to be populated by the other Christian faction, and where walls were built through the middle of towns on the basis of separating those factions, I'm curious to know what the experience of non-Christians was in this.
Were Jews, Muslims, Sikhs, atheists, or other religious groups targeted? Would they fall afoul of either faction for simply not being the same religion as a given fighter, regardless of not being "the enemy" either?
I also have to imagine that some Catholics were unionists, and some Protestants were republicans... how did such people go about supporting their side without getting either lynched by others of their own side as "traitors," or murdered by their desired colleagues as suspected spies?
/u/petros08, I suspect I may be sending you what looks to be your second thread on The Troubles for today, if you have time for it!
There hasn't been a huge amount done on this so I'm basing my answer mostly on the essays in Paul Hainsworth's Divided Society: Ethnic Minorities and Racism in Northern Ireland (1998). Minorities weren't expressly targeted by paramilitary groups and generally tried to stay out of the conflict. The number of people we're talking about is very small and the biggest effect of the conflict was probably to discourage immigration and keep the minority communities from growing.
The loyalist paramilitary groups do have connection to far right racist groups and some were involved in racist incidents. The exception is their incongruous support for Zionism which seems to be a reaction to Republican support for the Palestinian cause.
Atheists were perceived to belong to their "original" group. There is an old joke about asking someone if they were a protestant atheist or a Catholic atheist but it was pretty close to the truth.