* Kaepernick again 'takes a knee'
* Goodell encouraged that players are moving 'to progress' (Adds quotes from Commissioner Goodell, paras 3-6)
By Mark Lamport-Stokes
LOS ANGELES, Sept 18 (Reuters) - Los Angeles Rams defensive end Robert Quinn raised his fist and San Francisco 49ers backup quarterback Colin Kaepernick was among several players who knelt during performances of the U.S. national anthem on Sunday.
Three Miami Dolphin players also 'took a knee' before their game against the New England Patriots as public protests continued in the National Football League aimed at drawing attention to racial inequality.