villainize
/ˈvɪlɪnaɪz/Definitions
1. verb
to represent or portray someone as a villain, often unfairly or inaccurately
“The media villainized the politician, portraying them as corrupt and inept.”
2. noun
the act of portraying or representing someone as a villain
“The villainization of the celebrity in the tabloid was seen as an unfair attack on their character.”