even though I am a bounty hunter, sometimes it makes me feel upset. they sell tokens in large quantities. prices are down, they don't care. and keep selling their tokens. therefore, some ico lock their tokens. even they make payments every week to prevent significant price reductions.
If the dump quantities are huge then probably it is not form the bounty hunters side since bounty allocation is only a small portion. I also feel upset when the price drops but what can we do to stop those dumpers? It is their right because they own that token after all. That's the beauty of this world, nobody can control nobody.