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Lol the book's murderer had a guy wearing a coat and hat that made it hard to tell who he was/what gender he was. There was literally nothing about him crossdressing or being trans. Maybe you should actually research stuff before parroting the crowd.
I found this link that I think you might benefit from it. It shows that racism and transphobia are very much present in the Strike series.
Also, someone else pointed out in a comment on my previous post (the link to their profile) another terrible fact: JK Rowling’s pen name for her newer books, Robert Galbraith, is actually the name of a man who pioneered Gay Conversion Therapies.
Upon hearing about this, I immediately looked it up and found that it was true. I picked this article because I thought it explained beautifully just how harmful Gay Conversion Therapies really were. While the author of the article seemed to be willing to chalk it up to a very unfortunate coincidence, I will not for the following reasons:
Let’s say she didn’t know Robert Galbraith was a real person, it was still JK Rowling’s responsibility to check whether her desired pen name was a real person or not.
After she “found out” about who this monster was, her only reaction was to claim she didn’t know and then continue using the pen name as if nothing. This is disgusting.
Is this enough research for you?