Do not remain silent.

"It is enough for students to be like their teachers, and servants like their masters. If the head of the house has been called Beelzebul, how much more the members of his household! So do not be afraid of them, for there is nothing concealed that will not be disclosed, or hidden that will not be made known. What I tell you in the dark, speak in the daylight; what is whispered in your ear, proclaim from the roofs."

Matthew 10:25-27 NIV