As >millions arrive in Mecca for this year's Hajj pilgrimage, everyone's eyes are on the holy site and images of it filled with pilgrims are already making the rounds on social media. 

However, rarely do people witness the amount of effort and work that goes into ensuring the safety of visitors. 

Over the weekend, tweeps decided to change that and via a now viral hashtag, thousands took to the social media platform, sharing images and videos of security officials tending to pilgrims. 

Here's a peek into the heartwarming work they do: 

1. Thousands shared this image of a security officer helping a child reach the Kaaba

2. Others shared this encounter between Turkish pilgrims and an officer who fluently spoke their language

3. People circulated this heartwarming moment

4. "May God bless every security officer at the holy site"

5. "We'll never be able to thank you heroes with words"

6. Pictures worth a thousand words

7. Countless moving moments

8. And selfies of course...