I have emphasized certain phrases to show you the passage is clearly about food...
Acts 10:9-15, "About noon the following day as they were on their journey and approaching the city, Peter went up on the roof to pray. He became hungry and wanted something to eat, and while the meal was being prepared, he fell into a trance. He saw heaven opened and something like a large sheet being let down to earth by its four corners. It contained all kinds of four-footed animals, as well as reptiles and birds. Then a voice told him, “Get up, Peter. Kill and eat.”
“Surely not, Lord!” Peter replied. “I have never eaten anything impure or unclean.”
The voice spoke to him a second time, “Do not call anything impure that God has made clean.”
Indeed the symbols used in vision to make a point to Peter - where at no point does Peter rise up and slay a rat, bat, cat and have a cat sandwich as the text reminds us.
Unless God is directing Peter to become a cannibal there is nothing about "calling man common or unclean".
Until you read what Peter said was the whole point of that parable/vision
Acts 10
28 And he said to them, “You yourselves know how
unlawful it is for a man who is a Jew to associate with a foreigner or to visit him; and
yet God has shown me that I should not call any man unholy or unclean.
Acts 10:34 “I most certainly
understand now that God is not one to show partiality, 35 but in every nation the man who fears Him and does what is right is welcome to Him.
Acts 10: 47 “
Surely no one can refuse the water for these to be baptized who have
received the Holy Spirit just as we did, can he?” 48 And he ordered them to be baptized in the name of Jesus Christ. Then they asked him to stay on for a few days.
Acts 11
Now the apostles and the brethren who were throughout Judea heard that the Gentiles also had received the word of God. 2 And when Peter came up to Jerusalem, those who were circumcised took issue with him, 3 saying, “
You went to uncircumcised men and ate with them.” 4 But Peter began
speaking and
proceeded to explain to them in orderly sequence, saying, 5 “I was in the city of Joppa praying; and in a trance
I saw a vision, an object coming down like a great sheet lowered by four corners from the sky; and it came right down to me, 6 and when I had fixed my gaze on it and was observing it I saw the four-footed animals of the earth and the wild beasts and the crawling creatures and the birds of the air. 7 I also heard a voice saying to me,
‘Get up, Peter; kill and eat.’ 8 But I said, ‘By no means, Lord, for nothing unholy or unclean has ever entered my mouth.’ 9 But a voice from heaven answered a second time, ‘What God has cleansed, no longer consider unholy.’ 10
This happened three times, and everything was drawn back up into the sky. 11 And behold, at that moment
three men appeared at the house in which we were
staying, having been sent to me from Caesarea. 12 The Spirit told me to go with them without misgivings. These six brethren also went with me and we entered the man’s house. 13 And he reported to us how he had seen the angel standing in his house, and saying, ‘Send to Joppa and have Simon, who is also called Peter, brought here; 14 and he will speak words to you by which you will be saved, you and all your household.’ 15 And as I began to speak, the Holy Spirit fell upon them just as
He did upon us at the beginning. 16 And I remembered the word of the Lord, how He used to say, ‘John baptized with water, but you will be baptized with the Holy Spirit.’ 17 Therefore
if God gave to them the same gift as He gave to us also after believing in the Lord Jesus Christ,
who was I that I could stand in God’s way?” 18
When they heard this, they quieted down and glorified God, saying, “Well then, God has granted to the Gentiles also the repentance
that leads to life.”
Acts 15
7 After there had been much debate, Peter stood up and said to them, “Brethren, you know that in the early days
God made a choice among you, that by my mouth the Gentiles would hear the word of the gospel and believe. 8 And God, who knows the heart, testified to them
giving them the Holy Spirit, just as He also did to us; 9 and He
made no distinction between us and them,
cleansing their hearts by faith.
In all of Peter's explanations ..not a word about now having rat sandwiches at potluck