I just had a look, can't find anything about the wine protest - it was 40 years ago, all pre-web, part of a larger anti-apartheid movement in New Zealand - organised by a local group HART who, among other things were targeting NZ imports from SA, people were going into stores and stickering SA products (especially bottles of wine)
The 1981 Springbok was probably the biggest thing that happened - I got arrested for blowing a whistle during a game (seems there's some silly rule that only one person at a rugby game can have a whistle or something, they couldn't find it when I got to the station and I was released without charge)