Class
Kate Middleton pregnant: Duchess of Cambridge and Prince William to have a second baby.

This is a positive representation because the article has an exciting tone, it also means another prince or princess for the royal family- other comments state how 'delighted' they are, which are positive comments.
This has no counter argument, the anchorage of the main picture is only showing the positives of them- they have another child and they all look so happy together. The media producer could have chosen a photo where they were struggling more but because they're upper class and are well respected they showed a happier photo to represent this.

http://www.walesonline.co.uk/news/wales-news/kate-middleton-pregnant-duchess-cambridge-7734954

Gender

Phoebe, from the TV show friends, has personality traits that display her as a ditzy blonde- she still believes santa is real and also think that her bike has spirit. However the creators have also broken this stereotype because she was homeless for a few years so is tough, there has also been hints she's been in jail and used a gun.
She's tough but in a positive light, she can handle things and take care of herself. Her ditziness can also be seen as a positive light because it creates humour in the TV show and whenever she gets targeted for it, she either sticks up for herself or her friends to do, showing they care and its not something you should be ashamed of.
The producers could've easily shown her in a negative light but by having traits of toughness mixed in with the ditziness really shakes up her character and adds interest and breaks the stereo type of ditzy blondes.

Age
Gandalf from The Lord of The Rings, is an older character from the film, he is shown in a positive light because he's wise and everyone looks up to him in respect. He can still run and fight and saves the team on many occasions, showing he is still strong which is not what many people consider the older generation to be like, they relate them to being frail and weak.
The media producer would've done this to show there is still hope left when you're old, it also creates tension and suspense because the audience doesn't know whether he will actually be able to save them.

https://www.youtube.com/watch?v=mJZZNHekEQw

Race
In the X Factor on the judges panel, 3 out of the 4 judges are white, with the fourth being Kelly Rowland in series 8, Nicole Scherzinger in series 9 and 10 and Mel B in the latest series 11. This is a positive representation because people value their opinions and they are seen as attractive for both the male and female audience.
 The media producer would have introduced this diversity as to prove themselves anti-racist and to attract male viewers.
It could be seen as negative however because the only other race has been young females, no other males and they could've been chosen for their attractive aspects.
This picture is from series 8 with Kelly Rowland as a judge.

Sexuality

Glee shows a very positive representation of all aspects of diversity, including transgender through the character Unique, homosexuals through Kurt, Blaine, Britney and Santana. Kurt especially becomes a beacon of light for others, he has to deal with bullying but comes out stronger, he follows his dreams and is now studying in NYADA. The fact that he over comes his bullying shows how strong he is and shows that even though not everyone understands it's okay to be different. Kurt is the first gay character in the show and has been there from the start, introducing others through the series, it's positive because he's not afraid to be himself and in turn his friends accept and respect him. 

The producer included characters of different sexuality's to show that it is okay to be different and to also perhaps give ideas to people on how to deal with the bully's.