@"r thing that comes to mind is that dreads for African Americans and European Americans alike are just an arbitrary fashion choice"
True, but that doesn't prevent something from being racist or otherwise problematic. So not really relevat.
@"White people copy black people and black people copy white people. Everyone copies, with a few modifications along the way. And its a good thing, isn't it?"
Yes, but as i stated, when you feel forced to assimulate, you do not get a choice to copy white people, you are forced to give up your culture in order to survve.
Which is, i think, a bug part of the why of this being an issue.
@"Can a group claim moral ownership of a hairstyle? It seems absurd to be me."
Perhaps not, but then copyright laws were mot a thing before the current century, and tonnes of older works (like, say, the bible) are public domain, so anyone can do whatever bible based fan-fic they want.
Would it infact be ok to treat the bible without respect while you force actual christians to read the Koran as a matter of assimulation? Is it ok for the Christians to claim ownership of the bible despite it beig out of copyright?
Or does public domain actual have its limits when it comes to treating other cultures with respect? (Or a least should it?) NB here i am proposing that dreads are in the public domain.
@"Also why lump all black people together? Why do "they" own the hairstyle collectively?"
I don't it is my place to criticise my own people first. I am fully aware that there is more genetic diversity inside africa than outside, so more types of people there than anywhere else (if we can indeed reduce people to types) But i'm not in the position of telling other black people how to experience their racial identity. Maybe some black people don't want to wear dreads, maybe it is not part of their cultural heritage, but it is not really my place to tell them.
You said your black friends had made this comment, and honestly, you could ask them. Do they all wear dreads? Is the fact that black hair tends to be structurally different (kinky) and dreading much easier at all relevant to this cultural practice? There are lts of relevant questions. But the main one is whether harm is done to them by racialisation. So if all black people have this in common that is reason enough to lump them together.
Likewise, it could perhaps be less offensive for an Apache to done Lakota dress, than a white person doing the same.
@"Should African American culture be criticized for appropriating Jamaican culture?"
If it is doing damage. In which case, i will repeat, it is not my position to judge. Are there Jamacians who have said this to black people? Is the damage the same? If it comes down to inequalities over assimulation, then it is not the same as white people with that freedom of choice.
@"With respect to dreadlocks, how does it hurt black culture?
Why do you say that white people with dreads is mocking african american culture?"
I didn't, i believe your black friends brought this one up. If it is part of a systematic abuse of their culture, which they feel forced to give up for survival, then you are indirectly taking part in this system.
I think this is a big part of it, on an individual level you may not be doing any damage, you may personally be very respectful, and show no racism. But when you are seen as being disrespectful by default, when you take part in a system, when the average person of colour on the street will avoid getting to know you because they assume (rightly) that you are not sensitive to these kinds of issues (which you say yourself black frieds of yours brought up, you are not being sensitive to their opinions) Then you controbute to the problem in a secondary manner.
Is the lack of equality enough? Will all people of colour assume you're an asshole for wearing dreads? Or will it just be a small warning sign that you're not going listen when they bring up issues of a cultural nature? I don't know.
I think the bigger problem is where people feel the need to assimulate instead of building a more tolerant society. But by going ahead and exercising your privilege to wear dreads and dress up in ther culture (without passing as non-white, and thus not seeing any of the downsides) you are not really helping the situation. And you make yourself out as one of the people 'not on their side'.