Often times , people may be sad when they see bad things happend to people that were never expected to experience such bad things and good things happens to evil people that were never expected to experience good things.
The God we serve is just God , His justice is for both the good and the evil people and it extends to the life after that is external life.
As we know in the bible John the baptist was beheaded for nothing. Wnatwas his wrong was that he was preaching. Do you think God will not judge, He will judge both now and after life.
The book of Job 20 vs 4-5 gave us the assurance that the victory of the wicked is for a short time that's why when you see them triumphant don't envy just remember it is for a short mile which can end at anytime.
In summary Luke 6 vs 20-25 when these things come towrfsypu don't be depressed or ask God rather be glad according to Jesus He said Rejoice and leap in joy that out reward is in Heaven so don't be discouraged hold onto that that is of great important for our rewards comes from above.
Thank you for reading.