Actually it was James I (or Vi of Scotland) and he was gay.

Yes indeed, Ad Hominem much? Know more at [FoolQuest.com]

I don't care if Marx was racist, I just don't agree with him.

It is silly to chastise historical characters and methods. Slavery brought wealth which forged the Modern world. Child labour had always been a part of the social fabric. Female domesticity fuelled the Industrial Revolution.

Now, in more ‘enlightened’ times we can refer back to these periods, but not relive them. We can challenge them as they arise because the benefit of hindsight gives us an informed position.

Whether we address the issues raises another set of questions.

Theist will always try to discredit anything that challenges their belief systems

No one is all right or all wrong. We have the benefit of historical perspective to choose what has proven to be most fair and helpful.

One of the favorites of theists is to say that Darwin was racist. The best response is to point out that while Darwin was mildly racist, speaking of lesser races, Jesus was very racist, speaking of other races as no better than dogs.

Quite agree. Marx is one of the greats of sociology along with Durkheim and Weber..

Not possible to ignore his work if you want to understand he dynamics and outcomes of the Industrial Revolution.