Some beliefs used as an excuse include "the [holy book] says so" (seen in various texts, depending on interpretation), "they're a different colour skin so they must be of the devil" (more of an ignorance than a belief), "my race/colour/religion is the only real one so I should eliminate the other fake ones" (e.g. Aryanism), and "God/an angel told me in my dreams that they should be oppressed" (often seen in cults).
Plantation owners supported and propagated racism to justify owning people as slaves.
Plantation owners supported and propagated racism to justify owning people as slaves.
Scientific Racism resulted in segregation theory that people were scientifically different was used to justify keeping them apart.
Scientific racism
Racism is bad because people shouldn't have to face any prejudices or discrimination because of their race and heritage.
Fascima and Racism
Leon Trotsky was against racism and believed in equality for all people. His stance on racism influenced his political beliefs and actions by shaping his commitment to fighting for social justice and advocating for the rights of marginalized groups. Trotsky believed that racism was a tool used by the ruling class to divide and oppress the working class, and he worked to unite people of all races in the struggle for a more just society.
Ireland - apex
Ethnocentrism is the belief in the superiority of one's own ethnic group. Racism is the belief that inherent different traits in human racial groups justify discrimination.That would be racial bias.
Because nazism is complete and total control and people like to have some freedom.
Ireland - apex
The concept of "race science" or "scientific racism" has been used by anti-immigrant groups to justify discriminatory beliefs and policies. This pseudo-science has been debunked and discredited by the scientific community.