(Richfield, MN) — A parent upset over the mask mandate at his son’s elementary school in Richfield was arrested after he barged into the school and protested the policy.  The incident occurred on the first day of school at Richfield STEM Elementary on Wednesday.  The man refused to wear a mask and yelled at staff members to take off their masks.  Richfield police arrested the man.  Mask policies have generated heated debate and opposition from parents nationwide as the country tries to control COVID-19 amid a surge in new cases.