meaning - Difference between "illegal" and "very illegal"

From my understanding of English, "very" means "more than the usual" or "to a higher extent".

I've seen on several places the expression "very illegal", such as here as an example: https://youtu.be/ytDamqTjPwg?t=8m23s

The bigger point here is, [the Pump & Dump scheme] is very illegal!

However, I don't understand the meaning here. If I apply my previous knowledge, it would mean it's "more illegal than usual", and from the context of the example quote above we're talking about illegal stock exchange practices.

But "more illegal than usual"? It just doesn't make sense to me, something is either illegal or it's legal. I can understand some crimes might be considered more damaging than other crimes. It leads me to think "very illegal" is a particular expression, plus it doesn't fit in the example context above.

I am not familiar with the literal translation of "very illegal" that would be "très illégal" in French. The closest meaningful expression I could find appended around the word "illégal" is "vraiment illégal", which would mean "it's illegal but you might have thought it isn't". In English without being certain about the expression, I would translate that as "really illegal", or "truly illegal", or "actually illegal" (even though I dislike the word "actually").

I wasn't able to find a definition on Google.

What is the difference between "illegal" and "very illegal" in general?

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I've been monitoring the answers and considering each one, and it seems clear that very is an emphasis on the illegality. Even though I do not know if all of the following is relevant as some answers have low votes, from all answers so far various facets appear as I interpreted:

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  very might emphasize the likelihood of being prosecuted for the crime (-> several mentions (A, B, C, maybe D)

  
  


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  very might emphasize how flagrant or unambiguous a crime is (-> several mentions (A, B, C)

  
  


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  very might emphasize the morality of the crime (-> most upvoted answer)

  
  



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  very might emphasize the severity of punishment of the crime (-> one answer with high votes)

  
  


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  very illegal might highlight that a illegal activity that doesn't immediately stand out as illegal for a target audience is not only illegal, but is also emphasized in some way (-> some mentions A, B)

  
  

The following do not answer the question but are interesting nonetheless:

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  Prefixing very might not be necessarily needed for crimes in which morality, severity of punishment or likelihood of being pursued are obvious to the targeted audience; adding it should be meaningful for the interpretation by the target audience as opposed to if it wasn't prefixed.

  
  


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  very illegal is informal (A, B), there are much better words for some situations (misdemeanor, felony, capital offense...)

  
  


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  One answer mentions highly illegal. As it stands out I cannot summarize it here.

  
  

There does not seem to be a strong pattern emerging from the answers for which facet everyone agrees about. I have the disturbing feeling that maybe my objective question is unexpectedly leading to subjective but valid answers. Even though the currently most upvoted answer may be the best answer, it might only reflect some valid facets of a more complete answer.

However it clearly highlights the emphasis aspect that seems to be common to all facets so I'm accepting that answer.

Answer

Sometimes, not only in English but in all languages, we want to emphasize certain situations. And then the language itself gives us devices that aren't always common, but we use them anyways, based on known and meaningful expressions.

I am very hungry

We can depict that the subject has surpassed the status of just "hungry" for they must have stayed a long time without eating. This is a known meaningful expression.

Murder is very illegal

From this, even if it doesn't make much sense in the binary nature of the word "legal", we can depict that "murder" is a crime that, morally or ethically, has surpassed the status of "illegal".

We can state that by looking at another not-so-serious crime:

Parking on the sidewalk is illegal

Yeah, we all know it is illegal and wrong. But it is a petty crime compared to murder. In some countries murder is penalized with life imprisonment, even with death penalty, while parking on the sidewalk gives you a fine and, in the worst of the cases, your car is towed.

We can still say that "Murder is illegal", of course it is, but in the sentence, the "very illegal" was made to emphasize.