Studies say that a four-year study was conducted on religious discrimination around the world and that Christians were the most discriminated against group, suffering harassment from government and society in 168 villages. Muslims are the second largest religious population in the world and were discriminated against in 121 countries worldwide between 2006 and 2010. Jews are the third religion to be discriminated against, even though they make up 1% of the population (11 facts). . Freedom from discrimination is a fundamental principle of human rights (Nygren). Sex discrimination is also starting to cause problems in the United States. Sex discrimination involves treating someone unfavorably because of their sex (based on sex). For sex discrimination to be illegal, it must result in different treatment that adversely affects the terms or conditions of employment (sex discrimination). Especially in the United States, women struggle and have to deal with sexual discrimination