"Unpopular decisions" refers to choices or actions taken by someone that are not popular or widely accepted by others. These decisions may be disliked or disagreed upon by the majority of people. Full definition
Getting the job done often requires making unpopular decisions. (inc.com)
When it comes to achieving our vision, we are willing to make tough, unpopular decisions in order to increase student achievement. (newschoolsforneworleans.org)
He job is, quite literally, to take blame for unpopular decisions the owners decide to make. (sbnation.com)