Foot hunting - try the 'Songs of the Fell Packs' book.
Slaving? - try Congo River (as above), or Flying Cloud.
Poaching? - A crime created by enclosure legislation - not the modern commercial style to feed the city restaurants. And yes, I too think £2000 for a days shooting is obscene. Few modern songs, but two styles in the tradition, epitomised I always think by "Eynsham Poachers" and "Two (Three) Brothers".
Whaling - there seems to a balance coming between 'pro' and 'anti'. Are we suprised at how few whaling songs were among the "Songs the Whalemen Sang" (Huntingdon).
Hunting? There is a balance coming here too. But, as Dylan said, "don't criticise what you don't understand".
You pays your money and you takes your choice.
Tom