President Barack Obama has commuted 348 prison sentences, more than the last seven presidents combined, spotlighting his call for criminal justice reform.

However, many are hoping Obama adds additional names to this historic list.

Fred Hampton Jr., son of Chicago Black Panther Party leader Fred Hampton Sr., who was ambushed and killed by Chicago police in 1969, has led a national “Free’em All” campaign, calling on the U.S. to release all political prisoners, including 20 Black Panthers incarcerated since the late 1960s and early 1970s.

The name familiar to most on Hampton’s list is Mumia Abu Jamal, an activist and journalist convicted for the 1981 murder of a Philadelphia police officer. Supporters believe he is innocent.

Others contend that Kwame Kilpatrick, Detroit’s former mayor who is currently serving a 28-year sentence for corruption, was unjustly punished and deserves clemency. However, when Obama visited Kilpatrick’s federal prison in El Reno, Okla. last July, he neither met with Kilpatrick nor granted him clemency.

Assata Shakur, who many in the Black community believe was convicted on trumped up charges due to her political activism, is another some wish pardoned. Shakur escaped prison in 1979, and fled to Cuba where she received political asylum in 1984. However, recent negotiations between the U.S. and Cuba to normalize relations revealed the State Department’s desire to extradite Shakur, dousing clemency hopes.

Regarding the 348 sentences that were commuted, a White House statement said harsh prison terms were doled out under “outdated and unduly harsh sentencing laws.” Most of those jailed were “small-time drug dealers who received long sentences under a code shaped by the government’s war on drugs,” with some serving life sentences for minor offenses.

“There remain thousands of men and women in federal prison serving sentences longer than necessary, often due to overly harsh mandatory minimum sentences,” the White House said.