Perhaps we should let them do their job? Im sure they have been briefed and know what they are doing.
Okay like in any occupation there will be the odd OTT Power crazy type or someone having a bad day but generally they have a job to do, they know better than us who they are looking for and why on a specific day/flight or whatever.
Reference to the individuals skin colour and comments like " People like me" say more about the OP than the Border Agency.