hot button

/HH AA1 T B AH0 T AH0 N/
noun
  1. 1

    A central issue, concern or characteristic, especially one that motivates people to make a choice

  2. 2

    The principal desire that a salesman needs to "hit" in order to make a sale

  3. 3

    An emotional trigger; something that arouses strong emotion or opinions.

adjective
  1. 1

    Arousing intense reactions; eliciting strong emotion or controversy.

    โ€œThe newspaper published articles on the hot-button issues on the front page to attract attention.โ€

Source: https://en.wiktionary.org/wiki/hot%20button, https://en.wiktionary.org/wiki/hot-button