Compared to the activities of Senator McCarthy and the Salem Witch Trials, playwright Arthur Miller took great risks to speak his mind in a dangerous time.
Comparing the activities of Senator McCarthy to the Salem Witch Trials, playwright Arthur Miller took great risks to speak his mind in a dangerous time.
Compared to the activities of Senator McCarthy and the Salem Witch Trials, playwright Arthur Miller took great risks to speak his mind in a dangerous time.
Comparing the activities of Senator McCarthy to the Salem Witch Trials, playwright Arthur Miller took great risks to speak his mind in a dangerous time.
Here, the participle is modifying a person, Arthur Miller, who is doing the comparison. Miller is not "compared" to anything; instead, Miller is doing the "comparing." That's why we need the active participle, "comparing."