Sometimes, it is the occasional lewd excesses of gay pride marches that shock conservative people, and may cause them to equate homosexuality with immorality or insensitivity, but this is a superficial and ignorant judgment.
The psychology is that many of the people on these marches were bullied when they were younger, usually at school – it is a fairly safe assumption as gay bullying is extremely common. They weren’t treated with sensitivity most of their lives, so the reaction is that they act insensitively to other people –sometimes– on these marches, some of them showing indecency, obviously not all of them.
For most, the march is just a resurrection of self-respect through solidarity and brotherhood/sisterhood. It is therapeutic and shouldn’t be repressed, and if some people don’t like it, then they should look at what root formed this flamboyant little plant – usually who we become stems from the childhood. A person who is loved and respected during their childhood, does not need to go on a march for he has it already, in a balanced way. Love does that- it gives people pride in themselves in a balanced way, not in an excessive way, but reasonable, that they are worthy of love, just by dint of their innate nature.
This is explained in Erich Fromm’s Art of Loving. He explains there are two types of love: mother love and father love. Mother love (which either men or women can show) validates the very being of the child and assures him self-worth regardless of his behavior. Father love (which also both men and women can show) is conditional upon the child being “good”. With only father love, a child would be too fearful of being “naughty” and be always in anxiety about his next move. I actually saw this in a young child who had been brought up by a stern father and no mother. He was always anxious and fearful. So, in order to gain self respect and confidence, a child needs to feel loved no matter what.
Lacking that early in life, he tries to gain self-respect later in life, not always in a way that earns him the respect of others, as any adjustment later in life is fraught with difficulty. The important thing is to protect all gay and lesbian kids from being bullied, including by their own parents, who if religious fanatics, may not accept them for who they are, and who both enact a cruel form of father love- which is not love at all- as it judges the child harshly for what he cannot change.