Getting beaten up or assassinated are just some of the occupational hazards for any politician, big deal. Go back to the Christmas of 2007 when Benazir Bhutto got blown away while greeting her supporters. She must have pissed off some people bad enough to get assassinated.
I think even Lee Hsien Loong knows this... that's why he's escorted by bodyguards even when he's buying chicken wings at a hawker centre.
Lee Hsien Loong, word of advice: bring more bodyguards with you. You'll need them.