not all things are symbolic but somethings are

 What is the STAR of REMPHAN?

(Act 7:42)  Then God turned, and gave them up to worship the host of heaven; as it is written in the book of the prophets, O ye house of Israel, have ye offered to me slain beasts and sacrifices by the space of forty years in the wilderness?

(Act 7:43)  Yea, ye took up the tabernacle of Moloch, and the star of your god Remphan, figures which ye made to worship them: and I will carry you away beyond Babylon.

(Act 7:44)  Our fathers had the tabernacle of witness in the wilderness, as he had appointed, speaking unto Moses, that he should make it according to the fashion that he had seen.

(Act 7:45)  Which also our fathers that came after brought in with Jesus into the possession of the Gentiles, whom God drave out before the face of our fathers, unto the days of David;

(Act 7:46)  Who found favour before God, and desired to find a tabernacle for the God of Jacob.

(Act 7:47)  But Solomon built him an house.

(Act 7:48)  Howbeit the most High dwelleth not in temples made with hands; as saith the prophet,

(Act 7:49)  Heaven is my throne, and earth is my footstool: what house will ye build me? saith the Lord: or what is the place of my rest?

(Act 7:50)  Hath not my hand made all these things?

(Act 7:51)  Ye stiffnecked and uncircumcised in heart and ears, ye do always resist the Holy Ghost: as your fathers did, so do ye.

Are these passages TELLING people to HATE on any who have the "blue and white" symbols....and/or the KING DAVID STAR in their midst that they are corrupted entirely?

No.  Just as a MAN could have the AMERICAN FLAG in their back yard.... they are displaying that THEY approve of the basic BACKING of JUSTICE SYSTEMS USED and FINANCIAL GUIDANCE with use for PUBLIC NEEDS (water systems, education methods etc.)

HOWEVER just as with AMERICAN FLAG symbol, if a man says they support the AMERICAN CITIZEN via such symbolic elements but THEN goes over and terrorizes or harrasses a public employee who is funded by "the state" as he is fixing the WATER WAYS.... that is an IDOLATOR of the "SYMBOL"....