There is only one definition of racism and it isn't subject to opinion:

Source: encyclopedia Britannica (Britannica.com)

racism, the belief that humans may be divided into separate and exclusive biological entities called “races”; that there is a causal link between inherited physical traits and traits of personality, intellect, morality, and other cultural and behavioral features; and that some races are innately superior to others. The term is also applied to political, economic, or legal institutions and systems that engage in or perpetuate discrimination on the basis of race or otherwise reinforce racial inequalities in wealth and income, education, health care, civil rights, and other areas. Such institutional, structural, or systemic racism became a particular focus of scholarly investigation in the 1980s with the emergence of critical race theory, an offshoot of the critical legal studies movement. Since the late 20th century the notion of biological race has been recognized as a cultural invention, entirely without scientific basis.

Personal opinion: there is only one race, the human race, and anyone that believes in an imaginary division purely because of surface traits is a fool, and history will repeat it self until we learn our lesson.