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.
(..) The bards will sing of their glory forever. Come, let's drink to their memory. I want you to raise the first cup. I am not in a mood for marrymaking. I'll ride down to marine, to prepare the boat. We still leave tomorrow, on the tide. Do we not? Aye. My fays. My friends, brothers, (..)2007 Beowulf