Photograph showing group of adults and children along the outer wall of a sukkah at the Hebrew Institute in Squirrel Hill.

Glass vase with four blue and white star-shaped balloons and a miniature American flag. Handwritten in black marker on white balloon is "Love One Another Right Now" with two hearts. Attached to front of vase is typed note that reads, "For our beloved neighbors that worshipped at the Tree of Life Synagogue, with great sadness, but also with a recommitment to a world of justice, reason, and love - [redacted], Chatham University;-[redacted], Washington DC - [redacted], Fouzhou China- [redacted], Sao Paulo Brazil."

Square card with white and yellow text against blue background. Card reads, "Mitzvah4Pittsburgh. Some spread darkness. We spread light. Choose a good deed. Choose a Mitzvah. Add light to the world," followed by four options and a place for respondents to list their name and email address. Some names and email addresses have been redacted for privacy.

Square card with white and yellow text against blue background. Card reads, "Mitzvah4Pittsburgh. Some spread darkness. We spread light. Choose a good deed. Choose a Mitzvah. Add light to the world," followed by four options and a place for respondents to list their name and email address. Some names and email addresses have been redacted for privacy.

Note from a member of The Church at Severn Run in Severn, Maryland. The note reads: "Dear friend, I am so joyful that you exist! As the well-loved child of God, you have an infinite worth and deserve so much love. My prayer is that you begin or continue to understand this throughout your life. May your life continue to be blessed. I love you! Love, Your friend from the Church at Severn Run."

Square card with white and yellow text against blue background. Card reads, "Mitzvah4Pittsburgh. Some spread darkness. We spread light. Choose a good deed. Choose a Mitzvah. Add light to the world," followed by four options and a place for respondents to list their name and email address. Some names and email addresses have been redacted for privacy.

Letter from a member of the Point Loma Community Presbyterian Church in San Diego, California. The letter reads: "Deliver us from evil! -"

Card from a student at West Allegheny Middle School in Imperial, Pa. The front features a hand-colored illustration of the words: "Be Strong" and other floral and geometric motifs. The back contains a handwritten note, "Stronger Together" sticker, as well as the stock signature: "From your friends at West Allegheny Middle School."

Square card with white and yellow text against blue background. Card reads, "Mitzvah4Pittsburgh. Some spread darkness. We spread light. Choose a good deed. Choose a Mitzvah. Add light to the world," followed by four options and a place for respondents to list their name and email address. Some names and email addresses have been redacted for privacy.

Post-it note with handwritten message in black marker. The message reads: "There is always hope in the face of despair [despair] and kindness will guide us through." Tape affixed to the upper edge.

Post-it note with hand drawn illustration of repeating stars and hearts in green marker.

Post-it note with handwritten message in blue ink. The message reads: "From strength to strength [Star of David]. With you from KBH and all of Virginia Beach."

Engraved aluminum medallion attached to gray ribbon. Medallion features engraving of Pittsburgh skyline, bordered by design resembling bridges and the words "Stronger Than Hate." Accompanying card provides context for medallion against a yellow and white gradient with black text. Includes quotation from Dr. Martin Luther King, Jr.

Sepia-tone photograph showing large group of people in a banquet hall decorated with streamers, Stars of David, and American flags. Text at bottom reads "The 25th Anniversary banquet of the Congregation 'Oher Chodosh Anshe Romanian' February 26, 1928 Pittsburgh Pa." Original photograph is creased in several places and missing one corner. 

Laminated printed signs in blue and green ink on paper. The signs urge the reader to "Show solidarity" and "stand up for our common values, today tomorrow and always." An illustration of three stylized people raising their hands appears in the upper center, surrounded by the words: "Kindness, Respect, Courage."

Post-it note with handwritten message in black marker. The message reads: "We are here for you [Star of David]."

Handwritten card in pencil on paper. The front cover features a Star of David in the center and reads in Hebrew: "L'chaim" (to life). The inside reads: "I'm so sorry for your loss. Sending you love, Mimi [last name redacted]." A Menorah appears in the center.

Post-it note with handwritten message in black marker. The message reads: "We will make the world a better place in the name of your memory."

Folded card with crayon illustrations. Cover features three human figures. One is standing and smiling. Second is prone and frowning. Third is floating with face obscured. Several balloon-like shapes float toward a colored band along upper margin. Interior reads, "We are here. Right by your side. Keep fighting and good things will come." Back reads "2018" above prone human figure.