Price manipulation is done by using many ways.Publishing speculative news in favour of boosting bullish trend is a way.Here on the below link,we could see that news sites continuously release news that bitcoin price is to boom.If we see such moves,we should be cautious about investing otherwise we may get fooled and we might have to regret for our wrong investment.Don't let news media to decide your fortune.
https://www.reddit.com/r/Bitcoin/comments/9dimq2/headlines_two_days_ago_this_is_how_market/My request to every crypto holder is don't follow any Pump and dump groups. Mostly they will encourage us to buy their recommended token that they already bought at very cheaper price and they will tell us to circulate the positive news on that token to increase the pump on this token and at that time they will dump the token what they hold but they instruct us to hold until it reaches certain highs.
This is pure form of making money by the admin of Pump and Dump groups.
This practice is mostly illegal. Due to non presence of regulation these groups are still practicing these methods in the cryptomarkets.