Everton, chelsea particularly early 80s , luton ..a lot of firms had a small minority at the time as indeed did Derby not particularly the top 70 of DCs lads but as the Ram said the hordes of hangers on around at the time.
man city was also bad at one time wasnt it man city away where a reasonably well known Derby black lad D. A. slashed a city lad outside main road in a row between man city and Derby this lad certainly had a history with blades.