I found this sentence in a book:
The character is speaking about a test he took in the past, were he failed because he assumed the best sword could have been made by a human, since dwarves were (at least in his eyes) better blacksmiths.
I understand most of the sentence, but I cannot understand ヘイコラ; I tried to parse it in any way I could think of, but I found no useful words or meaning.
As far as I understand, the character is saying "At the time I hated humans. Many fellow dwarves were oppressed just because they were dwarves and were driven off their land by humans", then something about humans and "in order to live" (生きるために), then "That hate clouded my eyes". But I have no idea about the ヘイコラ part