Again, the thread title shows it. That bit. Describing them only as being vandals while omitting why they met Harper and in what context makes it sound like he knew he was meeting with people who were vandals, perhaps because they were vandals.
Again, "Vandals slip past security and meet with Prime Minister" is an equally true description of that event yet with a totally different insinuation.
Considering article says Harper was visiting the company owned by one of the men, where the meeting took place, I hardly think your hypothetical works.
The men, who have been identified as Balkar Jhutti and Harvinder Rai of Brampton, Ontario, privately met Harper at the premises of a company owned by Jhutti, a Conservative donor.
The usual pussyfooting of 'alleged' was missing from the title, but the articles clearly state further in that the identified men were videoed at the scene but not in the act. So the only insinuation I can read into the title is that the men are the vandals; nothing to do with Harper. At this stage, after the Ford Years, surely we grown-ups all know it's only an accusation against the men, how likely a one is why we read on. But at worst all we know, or can say about Harper is that he and some bad men were in a room. And that's all that was said — or insinuated about him — there.
I'm old enough to remember a catch-phrase about Caesar's wife and being virtuous. Whether she really was or wasn't didn't matter; all eyes were going to be on her, and everything seen would have its cost. Same with Harper; it's how politics works, insinuations aren't needed, and explanations don't help.