This was said by the famous American civil rights leader Martin Luther King. The original sentence is: In the end, we will remember not the words of our enemies but the silence of our friends. Judging from the background of the time, Martin Luther King wanted to call on black compatriots to stand up and unite to fight against racial discrimination. It can be understood like this: In the end, what we grieve about is not that others still discriminate against us (black compatriots). It is even more unbearable than it is now, but it is not as good as our compatriots being indifferent to it. Stand up and fight for the rights you deserve.

You can also learn about the silent support of friends! ~ ~ In short, both meanings are understandable ~