[enriquto]

> Where I can sign to support impartial investigation.

You can sign the "support" letter.

It says clearly that RMS is not above criticism, that it welcomes discussion on all the issues, but that the smear campaign supported by the other letter is unacceptable.

Besides, notice that the promoters of the pro-ostracization letter are not open for discussion. Any discussion or move towards a compromise (e.g., by questioning RMS's fit as a leader while rejecting the lies of the letter) is ruthlessly suppressed.