I know is manipulation about how dropping price bitcoin or altcoin, but I am still little worried if many people keep sell their coin, I know they have panic to sell coin and make price more drop, just few people know is bad situation to make altcoin or bitcoin go down to drop price.
Good thinking and I agree with the way you think.
the manipulator will drop prices and benefit yourself so in my opinion, exploring panic sales is part of a manipulation scheme, what they like to buy Bitcoin or altcoin at a panic price. Collect all Coins from weak hands and then prices will move quickly. Patience is the key to fighting.