According to flyers posted on Roosevelt Island kiosks:

Remembrance for Those Killed at Emmanuel AME Church, Charleston, S.C.

Friday June 26 at 7:30 p.m. at pier opposite subway/Starbucks

An ecumenical gathering of solidarity among Roosevelt Island’s spiritual and other organizations and community members to quietly remember those lost on Wednesday, June 17, 2015. Please join us. RIRA.

Here’s the first Sunday service at Emmanuel AME Church since the shooting

Here’s more on history of the South Carolina Emmanuel AME Church.