I think if bitcoin rose quite steadily and slowly people wouldn't look at the best cryptocurrency with an "evil eye". Going forward, do you think a slow steady rise, rather than a speedy erratic rise is good for bitcoin to get "accepted" all over the world? The sudden rise seems to scare people and governments.
If is rising slowly, I think that's normal activity of bitcoin but if it has a sudden increased of the price, I am sure someone manipulating the price.