sensationalist

/S EH0 N S EY1 SH AH0 N AH0 L IH0 S T/
noun
  1. 1

    One who indulges in sensational behavior or action.

  2. 2

    One who believes or espouses the philosophy of sensationalism.

adjective
  1. 1

    Sensationalistic; tending to sensationalize; characterized by sensationalism (the use of exaggerated or lurid material in order to gain public attention).

Source: https://en.wiktionary.org/wiki/sensationalist