Triumph of Good over evil

Most of the stories : cinema, novels end up in a situation which has good triumphing over evil. Infact human mind thinks that should be the case wishfully. Even there is a poem from saint Tukaram that the last day should be happy, and thats what has been my effort. There is a great song in marathi ' shevatcha din god vhava yaach sathi kela hota attahas'
But does that happen in life. all the efforts of farmers in vidharbha fighting against loan sharks end up hanging off a rope. Loan sharks are evil for sure. But do the victim signify Truth and Good. To an extent yes, they are hapless part of evil system. But there are weaknesses as well. But who does not have weakness on this planet.
So how can truth overcome evil: Patience and Belief Shraddha and saburi. Thats what makes difference. If the situation is not happy then its not an end. Picture abhi baaki hai mere dost.
Idea is to work towards that end with belief and patience.
I am sure all evils will be overcome that way.