How are social groups represented in music videos?

For this task I have chosen to analyse all three versions of the Band Aid videos with the song 'Do they know its Christmas Time'.
In the first video made in 1984 (the original) it begins with a medium close up of a copy of a newspaper with an article stating Band Aid and using a picture of the participants who are involved vocally this can demonstrate that within the music world that several care about the world around them and not just themselves. Then progressively it be seen that there are several different shots to show each other the participants involved, for example, there is a usage of noddy shots to show all the equipment involved in making and producing the song and video. In addition, there is a usage of point of view shots towards the begining to portray to the audience where this production is intially taking place, then furthermore, throughout there is a constant use of close ups of the participants, cutaway shots of the crew who are putting in a lot of effort to achieve their desired outcome, also there is a mixture of wide and very wide shots to show the artists arriving and certainly when they are all performing together as on group this could be done to represent the rest of the world coming together to help.
Moreover, within this video there are several meanings to as in why these particpants are doing this song and that there several under wrapped deeper meanings to the video as well. For example, even though that the most popular music acts are coming together to attempt to save all of the people in Africa from stravation, and even poverty and aids etc. However, if you was to talk about race and the majority of one ethnic group it can be seen that that majority are richer and the Africans are seen to be less fortunate that it seems to be a issue of the rich helping the poor and in away can be seen as undermiming them. This can be seen as unethical but due to the low economy over there and the growing population that the wealthy people are constsantly trying to fix these issues, which sadly I feel will be even more impossible to fix due to the population being to dense. 
However, considering how it was portrayed in 1984 the 1989 version shows several clips of the situation to build and create a situation which will enable there audience to sympathise to the on going problems in Africa. At the start of this version it starts off with a reporter in Africa explaining the situation and moving the camera through the crowds of them, this can show that because of the ongoing population that problems are getting worse and action needs to take hold. Same as the original all the camera angles are near enough the same and showing that all of the artists taking part passionately care. But now compared to the original the minority ethnic group participants have increased so it demonstrates how far society has progressed since 5 years ago.
Finally, in the more recent version shot in 2004 it can be noticed that there is now an equal amount of participants of each ethnic background shows that respect of other backgrounds and cultures have becoming a conserable lot more acceptable and that equal rights such wealth are equal between these groups in society as well. Also to end that again all the shots taken are made up of similar camera angles with similar representations.
In conclusion the social groups here being talked about has allowede black people have become more respected within society and are now equal to white people.