Complex sentence: On March 20,2010, Sheehan was again arrested in front of the White House, along with seven others, after they defied orders by officers of the United States Park Police to clear the sidewalk on Pennsylvania Avenue.
Split into simpler sentences: On March 20, Sheehan was again arrested in front of the White House. Officers of the United States Park Police arrested her and seven others after they defied orders to clear the sidewalk on Pennsylvania Avenue.