Adelaide and the AFL Players Association have condemned a vile, racist social media comment aimed at Eddie Betts.

The star forward posed for a selfie with a Fremantle fan ahead of Sunday's match at Optus Stadium, which later appeared on his Instagram account with his comment, "I have time for everyone".

After the Crows' upset loss he posted another image of the comments below the picture which included "Why with a monkey" by an unnamed user, to which he replied, "I have no time for this".

The Crows believe the comment was made by a Perth-based fan.

"It's unacceptable that our indigenous members continue to be racially vilified over the fence during games, in the community and in this instance, on social media," AFLPA chief executive Paul Marsh said via statement released on Tuesday night.

Richmond defender Alex Rance has also voiced his disappointment in the incident.

ďIíve been reflecting about the weekendís incident with Eddie Betts and Iím still so astounded and shocked that this still happens in society today,Ē Rance said in a video on his Instagram account.

ďItís so backwards and unacceptable, and at what point did humanity ever become second place to such a trivial thing as a game?Ē