citizen appears to be an assault (that's on the video).
About those alleged break-ins: "USA TODAY filed an open public records request with the Glynn County Police Department for burglaries and home break-ins in the Satilla Shores neighborhood between Jan. 1 and Feb. 23. The department's records office said in an email Thursday it had no records matching that request."
https://www.usatoday.com/story/news/2020/05/07/ahmaud-arbery-shooting-video-prosecutor-arrest-mcmichael/3089040001/