On Sunday, a shooting at an Orlando gay nightclub left 50 dead and 53 wounded. It was the deadliest mass shooting in US history, and the worst act of terrorism on American soil since September 11, 2001.

In the aftermath of this horrific attack, organizations and individuals the world over have found ways to show support for the victims, their loved ones, and the LGBT community at large. Here are some of the most moving tributes thus far:

Participants in Los Angeles' annual pride parade acknowledged the attack during a day usually reserved for celebration.

San Francisco's City Hall displayed the colors of the LGBT pride flag.

Blood donors lined up to help the wounded victims. 

In Berlin, white roses were wrapped in pride flags at a makeshift memorial. 

Author J.K. Rowling mourned the loss of a young man who operated the "Harry Potter and the Forbidden Journey" ride  at Universal Studios in Orlando. 

One World Trade Center lit up in the pride flag's colors. 

Mourners lit candles and wrote messages at a vigil in Hong Kong. 

The cast of "Hamilton" performed without prop guns during the Tony Awards telecast on Sunday night.

The Orlando Gay Chorus performed "You'll Never Walk Alone" at a prayer vigil for the victims at Joy Metropolitan Community Church. 

The Orlando Eye lit up in pride colors.

The Newtown Action Alliance, an organization formed after the Sandy Hook school shooting in 2014, held a roadside vigil. 

New Yorkers created an impromptu memorial at the Stonewall Inn, the site of the 1969 riots that catalyzed the LGBT civil rights movement. 

Adele cried as she dedicated her concert in Antwerp, Belgium, to the victims. 

Mourners observed a moment of silence at a vigil in Atlanta, Georgia.

A Muslim man donated blood to help wounded victims, despite the fact that he is fasting for Ramadan. 

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