More specifically you said the claim was that "
all physical contacts in discipline are abusive".
	
	
		
		
			You additionally took a sideways step and insisted that I was conflating "physical restraint" and "punishment" as synonymous, when I've done no such thing.
		
		
	 
What you've done is conflate discipline and punishment (the UN statement only talks about physical punishment). Punishment is a subset of discipline. In other words, all punishment is a form of discipline but not all discipline is punishment. 
The UN statement which talks only about 
physical punishment does not support your claim about "all physical contacts in 
discipline".