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/Unfortunately we cannot do anything if there are some peoples manipulating the market.
If we know they are able to manipulate, what we can do is just stay calm and not panicking when the price falling or rising.
Always take action with your mind, not your emotion.