Prejudice is when a person negatively pre-judges another person or group without getting to know the beliefs, thoughts, and feelings behind their words and actions. 

Bigotry is stronger than prejudice, has a more severe mindset and is often accompanied by discriminatory behavior. 

Antisemitism happens when you take the worst parts of prejudice and bigotry and combine them into an irrational conspiracy theory designed to reinforce a non-secular narrative. 

– Dad