bourgeois sensibilities

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Shaitana interrupted him. "But it shocks your bourgeois sensibilities? My dear fellow, you must free yourself from the limitations of the policeman mentality."

Poirot said slowly, "It is true that I have a thoroughly bourgeois attitude to murder."
"But, my dear, why? A stupid bungled butchering business - yes, I agree with you. But murder can be an art! A murderer can be an artist."
"Oh, I admit it."
"Well then?" Mr. Shaitana asked.
"But he is still a murderer'"
"Surely, my dear Monsieur Poirot, to do a thing supremely well is a justification! You want, very unimaginatively, to take every murderer, handcuff him, shut him up, and eventually break his neck for him in the early hours of the morning. In my opinion a really successful murderer should be granted a pension out of the public funds and asked out to dinner!"

Poirot shrugged his shoulders."I am not as insensitive to art in crime as you think. I can admire the perfect murderer; I can also admire a tiger - that splended tawny striped beast. But I will admire him from outside his cage. I will not go inside. That is to say, not unless it is my duty to do so. For you see, Mr. Shaitana, the tiger might spring."

Mr. Shaitana laughed. "I see. And the murderer?"

"Might murder," said Poirot gravely."My dear fellow - what an alarmist you are! Then you will not come to meet my collection of - tigers?"

"On the contrary, I shall be enchanted."
"How brave!"
"You do not quite understand me, Mr. Shaitana. My words were in the nature of a warning. You asked me just now to admit that your idea of a collection of murderers was amusing. I said I could think of another word other than amusing. That word was dangerous. I fancy, Mr. Shaitana, that your hobby might be a dangerous one!"

Mr. Shaitana laughed, a very Mephistophelean laugh. He said, "I may expect you then, on the eighteenth?"
Poirot gave a little bow. "You may expect me on the eighteenth. Mille remerciments."

"I shall arrange a little party," replied Shaitana. "Do not forget. Eight o'clock."
He moved away. Poirot stood a minute or two looking after him.He shook his head slowly and thoughtfully.
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1. From dictionaries:

- (disapproving) interested mainly in possessions and social status and supporting traditional values

Does BOURGEOIS here mean old-fashioned people's feelings? old-fashioned attitude?

2. Shaitana MOVED AWAY. Does it simply mean he WALKED AWAY? Or other connotations?