A day after his appeal for clemency went unheeded, Axl Rose is taking Indonesian President Joko Widodo to task for the execution of two convicted drug traffickers.

"Widodo's refusal to postpone the executions until all legal challenges and investigations of corruption are resolved is inexcusable," Rose said in a series of tweets. "For Widodo to be out of the country during his big statement, refusing to take calls or read any last-minute pleas for the condemned is cowardice. The people of Indonesia deserve better."

The Gun N' Roses frontman originally wrote a lengthy letter of protest, laying out a detailed argument for sparing Andrew Chan and Myuran Sukumaran, two Australians. "People make mistakes, sometimes big and horribly regrettable mistakes," Rose wrote, "and sometimes more importantly people learn from their mistakes and make new choices, strive and succeed at true positive change."

Joko Widodo turned a few heads by professing his love for bands like Metallica, Megadeth and others. He served as governor of Jakarta from 2012-14 before winning the last presidential election. Andrew Chan and Myuran Sukumaran were arrested in 2005 at Denpasar airport, and later received Indonesia's standard death penalty for drug trafficking convictions.

See Guns N' Roses and Other Rockers in the Top 100 Albums of the '90s

Rock's Nastiest Feuds