In case he does decide to venture back to respond to the questions:
"BTW....Economic Sanctions can only be applied by governments."
Not true - the boycott on buying South African ran for years in Britain.
The strike of the Dunne's employees when the management refused to stop stocking South African goods is legendary - there's a statue to them on the Mayo pass from Linane to Louisbourg, in Mayo (hope to visit it next week, weather permitting).   
he same with boycotting holidays in Fascist Spain, Turkey, and Greece after the coup.
Students have begun boycotting Israeli lecturers
Any decent family, organisation or individual can support a boycott - not as effective as government boycotts, but at least you have some sort of voice.
Jim Carroll