I dont think they were suggesting that we stop immigrants coming here. This poster came here because they liked our country, and wanted to integrate into it, bit the ones they are concerned about are the ones who don't like our country and have a wish to harm it. Those 2 things are very different. The vast majority of people welcome those who wish to come here, work, contribute, and who respect and uphold our values around equality, women's rights etc, although of course there are a small amount of people who hate all immigrants because they are just horrible narrow minded racist people
But to dislike seeing groups of women within some cultures in our country being systematically oppressed, beaten, mutilated, hidden away, forbidden from working or learning English does not make me racist. So many families I work with, all the men are dressed in western clothes, speak English, work, drive and socialise. The women cannot speak English, so all communication with them is filtered through a man (we offer an interpreter but most times this is declined), they literally have no voice and therefore no say in decisions being made about their child. They are at home looking after children, having a child every year as not permitted to seek birth control, in arranged marriages to cousins which we are seeing more and more as a cause for children being born with complex genetic abnormalities, and then being blamed by the wider family for their child being disabled and subjected to verbal and physical abuse. The scale of this issue is so vastly underestimated, as no one will mention it for fear of being labelled racist.