I'm not an expert on the European far-right, so I cannot comment on how neutered they are. However, it does no good to underestimate an enemy.
IIRC, it was the Tamil Tigers who perfected the use of the suicide bomb, and proved its usefulness. I really don't think it requires a specific culture at all, rather just a desperate enough situation where people need to die, and it doesn't matter if the killer dies along in the process.
Islamist groups, in their insurgency and terrorism, might be the largest group of people in that category, but I do not think it is useful to say they are the only people in that category.