Why Do Protestants Believe Venerating Relics Is Pagan?

Mother continues to read from The Christian Mother and The Christian Father and answers questions from:

Donna, who is disheartened by Pope Leo not visiting the United States for its 250th Birthday;

Luciano, who wants to know if speaking in tongues is against the Catholic faith;

Joette, who does not understand why some protestants consider venerating relics pagan;

And more