Fallingstar
Blossoming
Islam is not a race.
No it isn’t. But the ‘othering’ of all Muslims and dehumanising of them is the same as with racism, they are treated as one homogenous group with no variations and referred to with racist tropes, so the description of racism is appropriate, as it is when referring to Jewish people in a similar way.
The definition of racism is actually racial and ethnic groups,
so it includes socially defined groups of people who identify with each other based on shared ancestry, social experience, culture, language, religion, etc.
This is why for example antisemitism is racist too as referred to in the quote.