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/Yes, price manipulation is a common way used by peoples who want to grab some profit with other's losses.
The problem is, we just can easily know that the price is being manipulated or not currently.
If we knew it, we would not be able to affected by their manipulation movements in the market.