Aside from the very unfortunate "Code of Honor" episode, I can't see how you can call TNG racist - or any other Trek series for that matter. From TOS on, Trek has been pretty inclusive with the casting of non-white actors in prominent "hero" roles. TOS had a black woman and an Asian man, TNG had several black actors, as did DS9, and VOY had a black actor, a Native American, a Hispanic, and an Asian.
However, in regards to the 'Code of Honor' episode, I have yet to hear those who are non-White complain about the episode.
It can go both ways, however:
I'm sure there are some who could complain about the predominant white society that 'Star Trek: Insurrection' wanted to portray.
And what about TOS 'The Paradise Syndrome'? We have a white male (Kirk) who comes to save the savage Indians, and fall for the beautiful Indian woman (Marimanee) who is also loved by an Indian warrior(Salish)....who feels threatened by the white male.
And the story of the white male being taken in by Native Americans had been done so much before; as we recall, Star Trek (TOS) came out during the time when the Western was the most popular genre.
'Aquiel' is considered a low episode, but it features Geordi LaForge in a romantic setting with an attractive lady. (If that same episode had featured Picard or Riker, would it have gotten the same flak?)
We can even go so far to look at 'Sub Rosa,' which features Beverly Crusher (white, but she's an underused female in the series) in a romantic setting. (It is also considered a low point in TNG, interestingly, by some). Again, if the story featured Picard or Riker in the same predicament...would it have been considered a high point, Hugo-award winning moment in Star Trek history?
I noticed something else interesting, in reading these posts:
I think the OP had a 'friend' (black, IIRC) who thought that the portrayal of Geordi, Worf were stereotypes; especially during the 80s..which is highly different now. However, some of the posters--white--didn't find anything wrong with it.
'How dare they look for racism! People will look for racism anywhere! Star Trek is above racism!'
With the exception of:
'Code of Honor' which (everytime this topic comes up, which is several times a month) majority of white Trek fans have a problem with the episode.
I have still, to this day, have not heard a black, Asian, or non-white Latino (who is a vocal Trek fan) complain about it.
So yes, I would agree:
Some people WOULD look for racism anywhere...especially if they see something they are not used to.