Terrorism is an appropriate word here. Threats of violence to achieve political goals. They threatened employees with violence because the store chose to offer those items. I’m not really sure how much more clear cut it can get. Terrorism isn’t just killing people.
terrorism /tĕr′ə-rĭz″əm/ noun
The use of violence or the threat of violence, especially against civilians, in the pursuit of political goals.
The act of terrorizing, or state of being terrorized; a mode of government by terror or intimidation.
The practice of coercing governments to accede to political demands by committing violence on civilian targets; any similar use of violence to achieve goals.
The deliberate commission of an act of violence to create an emotional response through the suffering of the victims in the furtherance of a political or social agenda.
Violence against civilians to achieve military or political objectives.
A psychological strategy of war for gaining political or religious ends by deliberately creating a climate of fear among the population of a state.
The calculated use of violence (or the threat of violence) against civilians in order to attain goals that are political or religious or ideological in nature; this is done through intimidation or coercion or instilling fear.
PugJesus