He pardons old white men who tried to game the system for their benefit. Just like himself.
Yeah, Trump is the only president ever to do something like that 
Examples of others? Especially others who pardoned as many and/or for crimes as bad as those pardoned by Trump?
William Jefferson Clinton pardoned/commuted the sentence of 140 people on his final day in office. Overall he pardoned more than 150 people and commuted the sentences of 42 more.
Here's a sampling:
Peter MacDonald - 14 years sentence for fraud, extortion, inciting riots, bribery, and corruption was commuted.
Carlos Vignali 15 year sentence for cocaine trafficking commuted.
Almon Braswell pardoned of his mail fraud and perjury convictions (something Willie knew about well I suppose). Also paid $200k, along with Vignali, for Hugh Rodham to represent their cases for clemency. Funds returned when the public learned of the payments. Wonder if that had anything to do with the pardons.
Linda Evans and Susan Rosenberg of the Weather Underground had weapons and explosives charges commuted after serving less than half their sentences.
Marc Rich, after Denise Eisenberg Rich made substantial donations to the Clinton library and to Hilary's senate campaign, pardoned of tax evasion and allowed to return to the US.
Susan McDougal, pardoned of contempt conviction stemming from refusal to testify about Clinton's role in Whitewater.
Willie's brother Roger pardoned of drug charges.
Democratic congressman, child abuser and fraud, among other things, Mel Reynolds, had his sentence commuted on bank fraud after serving his entire sentence for 12 counts of child sexual assault and solicitation of child pornography.
Maybe my favourite, Harvey Weining, sentence for facilitating an extortion-kidnapping scheme and helping launder at least $19 million for the Cali Cartel was commuted.