I love that we stand as a community and ALL say (and symbolically “beat” our chests gently with a closed fist) each of the sins. So that no one needs to stand up in front of the crowd when a certain sin is read, we ALL read ALL of them. It’s like G-d is saying “...and you know who you are.” :)
In the first part of the Roman Catholic Mass there is a prayer called the Confiteor in which the congregants say a prayer begging forgiveness for their sins and are supposed to beat their chest with a closed fist.
Before 1970, this was done 3 times during the prayer. After 1970, only once was required - but in general practice in the USA almost no one does it anymore.
As far as I am concerned, its slough into abeyance is a scandal.