Racism occurs when an individual or group acts superior towards another individual or group, and is based solely on race.
Antisemitism can be described as a form of Racism. It is expressed as hatred toward Jews, their culture and their property.
Islamophobia can be described as a form of Racism. It is expressed as hatred towards Islam, Muslims, or Islamic culture.
Racism usually manifests from ethnic reputation or historical reputation passed down through the generations. Both of these are emotional and irrational responses and by definition are unethical.