Surely you can appreciate the difference between the context and history of the words 'nigger' and 'ginger' enough to not make short-sighted threads like these?
Also, it's cute that you made a separate thread so you get a bit more of that attention you seek.
Ginger does have a history though and it's one which has been part of a general acceptance of ridiculing people with red hair. The fact that it happened in modern times (2005 and onwards) and was quite honestly widely accepted on the internet, shouldn't be taken as somewhat less severe than things originating from hundreds of years ago. It can possibly also be connected to a longer history of malicious treatment towards those with pretensity of having red hair, i.e. the irish. I wouldn't take that approach though, even if it's an interesting attempt at synthesis. Point is that our blind spots are always active in how we mistreat others and there might be data available showing that we might be treating people with red hair less than others (any research done on it? psychological or sociological research?) and that it might be one of the more accepted forms of prejudice that attacks someone for the natural color of their hair.
From my anecdotal experience ginger men would be those I'd likely view as being especially affected by the perception of "gingers", and I wonder if that's just my anecdotes and prejudice speaking or if there's a gender element to it as well.
When you start with an analogy, without any further explanation, to compare one thing to another different thing, it's certainly done in an attempt to ridicule. It's honestly childish. It's not inviting for a discussion, it's trying to strawman the opposition.