An incident to get off my chest

Just a weird matter to share please mummies and daddies please ALWAYS hold your lil ones hand when out nywhere. Hubby myself and my two lil kids( 2yr old son n 9mth old lil gal) had a small trip to the nearby mall n while walking in the mrt station, a china man just came and grab my son hand (while i was alrdy holding) and tried to pull him away! as soon as i saw that i immediately reacted n pulled my son hand back and held him real tight. the china man jus smile all the way backed off mumuring so nice and dissapeared. Never thought i will face this senario as it was rather a traumatic incident. So much question runs in my mind ever since. Nonetheless Thank god nothing happened. always be vigilant when out with your lil ones