Markets prices go down and tokens go down its normal. We should stay away from the ICOs now. If you received tokens from ICOs or bounties you should sell directly because tokens go down now. If you believe anyone token you can hold it but in my opinion you can sell this token too
It should be before we invest then study tokens in detail, a decentralized system makes everything very possible, when we think that prices go up but because the market is red then many token prices actually drop, and being patient is the best thing to get maximum profit.