Anyone else notice how cyclists are getting more entitled?

I live in a city. I am more than happy to share the road with cyclists. In fact, I welcome the diversity of travel! However, as of the last year or so, I have noticed ...a change in their behavior.

As of late, cyclists here in Denver have decided that they do not need to stay in their bike lane, and in fact just ride right in the middle of the car lane, as though they are cars.

Just the other night, I was driving down 6th, which is a fairly busy street. There was plenty of room for this fellow to move to the bike lane, but instead he decided to park in the middle of the right line, directly in front of me. I felt slight annoyance, but because we were at a red light, I figured it was all good...he'll move over when the light turns green and let me and the other five cars behind us pass and go along. Sharing the road and all!

Well nope, this bugger decided to stay front and center, slow as molasses in winter, holding up the whole line of cars. So slow that I was only half way through the intersection when the light turned yellow.

So, I honked at him. A short, polite, "please move over sir, there are several vehicles trying to get through this light" honk.

Well, the bugger spun his head around cursing and flipped me off! I rolled down my window and told him he was blocking traffic and he told me to "suck" his "dick". I laughed out loud at this. And drove on my way.

But my question is, isn't it illegal for them to block traffic? AND why are they so entitled? I've spoken to several people who have had similar encounters with bikers on the road. WTF is this all about?