Conversation so far:
what are silent sentenials by alice paul?
The pickets, participating in a nonviolent civil disobedience campaign known as the "Silent Sentinels," held banners demanding the right to vote.
did they gain the right to vote?
CANNOTANSWER.
what was her biggest accomplishment?
After the United States entered World War I in April 1917, many people viewed the picketing Silent Sentinels as disloyal.

Question: why did they view them as disloyal?
Self-contained rewrite: why did many view the picketing Silent Sentinels as disloyal?