The prosecutor in the trial of the three men accused of murdering Ahmaud Arbery delivered a hard-hitting closing argument on Monday.

The arguments were made by Linda Dunikowki, a senior prosecutor for the Cobb County District Attorney's office, which is the fourth prosecutor's office to handle the case.

"They shot and killed Ahmaud Arbery, they all acted as a party to the crime," argued Dunikowki, who has become something of a celebrity online.

Dunikowki explained why she saw the but-for test as the "bottom line" in the trial of Travis McMichael, his father Gregory McMichael, and William "Roddie" Bryan.

READ MORE: Travis McMichael's pro-vigilantism posts come back to haunt him in Arbery murder trial cross-examination

"But for their actions, but for their decisions, but for their choices, Ahmaud Arbery would be alive," she explained. "That's why they're indicted with murder — and four felonies that led to the murder."

Watch:

Ahmaud Arbery prosecutor delivers closing argument with this simple test for the jurywww.youtube.com