Politically, she tends to 'go against the tide' on her college campus. [=she tends to have different political opinions than most people on her college campus]
He became involved in social issues at the 'high tide' of the civil rights movement. [=at the most active and important time of the civil rights movement]
The team was on a losing streak, but then 'the tide turned' [=their luck changed] and they went on to win the championship.
(..) standard flies again. Then let them come, let them break their skulls on these stone walls. And bring me my prize. My Lord, we only have a few hours before the tide comes on. Not long enough to breach the castle walls. - Is there no other way in? - There is another way. We're promised gold (..)2012 Snow White and the Huntsman