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.
(..) ...with the 'sgeirsson-Anderson Institute for Tectonophysical Exploration. The 'sgeirsson-Anderson... What? Still working on the name. But the point is, rising tide lifts all boats. Man, that's awesome. I think... Am I a boat? - You're a boat. We're back in business. - All right, dude. (..)2008 Journey to the Center of the Earth